6002: In September 2011 a new world record for the most participants at a Mongolian wrestling tournament was set, with a total of 6,002 competitors. (Big Martin)
6009: Anyone who was around in the year 1961 may have noticed that the year number looked the same when turned upside-down. It won't happen again until the year 6009; that's the first strobogrammatic number after 1961. (GuyBarry)
6016: In 2011 Niek Vermeulen's collection of 6,016 airline sickbags set a world record. (Big Martin)
6025: There are 6025 petals of the Flower of Life after the 45th iteration. The Flower of Life is a grid of overlapping circles created in the following fashion:(GuyBarry)
(i) Start with two circles of radius s with centres at the ends of a straight line of length s. (ii) At each subsequent step, draw circles by placing centres at the intersection points of the circumferences of circles in the previous iteration, with overlaps forbidden.
6041: The Historia belli sacri (History of the Holy War) is a chronicle of the First Crusade written by an anonymous monk of the Abbey of Montecassino, some time after 1131. A second fragment of the Historia belli sacri was discovered in Latin manuscript 6041 A of the Bibliothèque Nationale de France. (GuyBarry)
6048: The UK Government export health certificate 6048 is required to supply animal based fire fighting foam to Taiwan. (Big Martin)
6049: The former Millers Dale Station, which closed in 1967, is situated at the west end of the viaduct that crosses the B6049 in the Derbyshire Peak District. The station's name was immortalized as "Millers Dale for Tideswell" in the introduction to the Flanders and Swann song Slow Train. (GuyBarry)
6055: John Metcalf, known as "Blind Jack of Knaresborough", was the first professional road builder to emerge during the Industrial Revolution. Despite being blinded at the age of six, he was responsible for building about 180 miles of turnpike road in the late 18th century. His career began in 1765 with a contract to build a three-mile section of road between Minskip and Ferrensby in North Yorkshire, now part of the A6055. (GuyBarry)
6057: Where can you find High Wycombe next to Maida Vale? In Perth, Western Australia, where they're both in postcode area 6057. (GuyBarry)
6062: In 2017 a Rolex 6062 watch owned by the last emperor of Vietnam sold for £3.95 million. (Big Martin)
6079: Winston Smith, the lead character in George Orwell's Nineteen Eighty-Four, is referred to as "6079 Smith W" whenever he appears in front of a telescreen. (GuyBarry)
6090: The Manhattan Bridge is 6,090 feet long. (Big Martin)
6097: In September 2018, two new particles known as bottom baryons were discovered at the Large Hadron Collider at CERN: Σb(6097)+, consisting of two up quarks and one bottom quark; and Σb(6097)-, consisting of two down quarks and one bottom quark. A third particle called a "tetraquark" may also have been detected. (GuyBarry)
6109: SOS Phone 6109A is the very first one on the M11 northbound near Woodford in North London. (tetsabb)
6116: At the time of the battle of Trafalgar a nautical mile was 6,116 feet. (Big Martin)
6137: The original Broadway production of A Chorus Line ran for 6137 performances, becoming the longest-running production in Broadway history until surpassed by Cats in 1997. (GuyBarry)
6144: From 1987 to 2006, the A6144(M) in the Trafford district of Manchester bore the dubious distinction of being the country's only fully single-carriageway motorway. (GuyBarry)
6162: 6162 is the concatenation of two consecutive integers, 61 and 62; it's also the product of two consecutive integers, 78 x 79 (a so-called "pronic number"). No other four-digit number has both these properties. (GuyBarry)
6163: According to the Cyclopaedia of 1819, a Montpellier pound weight equated to 6,163 English grains. (Big Martin)
6174: 6174 is perhaps one of the most remarkable four-digit numbers in respect of its mathematical properties. It's sometimes known as "Kaprekar's constant" after the Indian mathematician D.R. Kaprekar.The above process will always reach 6174 in at most seven iterations, and then stays there permanently. (GuyBarry)
1. Take any four-digit number whose digits are not all the same. 2. Arrange the digits in descending and then in ascending order to get two four-digit numbers (which may include leading zeros). 3. Subtract the smaller number from the bigger number. 4. Go back to step 2 and repeat.
6176: Crater Lake in Oregon has an elevation of 6,176 feet and, with a depth of 1,932 feet, is also the deepest in the USA. (Big Martin)
6190: In 2016 Rob Woodall reached the final trig pillar in his attempt to reach all 6,190 of them known and still existing in Britain. (Big Martin)
6207: No. 6207; A Study in Steel is a 1935 British documentary film which documents the construction of the steam locomotive, LMS Princess Royal Class No. 6207 Princess Arthur of Connaught, at the London Midland and Scottish Railway's Crewe Works. You can watch the full 17 minutes on YouTube. (GuyBarry)
6209: There are 6209 letters in the Book of Habakkuk in the King James Bible. (GuyBarry)
6219: In 2019, the small Western Australian town of Cookernup won a "hard-slog" battle with Australia Post to have its postcode returned. In 1974 Cookernup merged into the neighbouring Harvey postcode of 6220, but several years ago locals began the fight to have their 6219 postcode reinstated. Australia Post believes this is the first time it has ever returned a town's postcode. (GuyBarry)
6220: On the opening day of Bristol's Clifton Rocks Railway on March 11th 1893, 6,220 people travelled up and down the line. It closed in 1934. (Big Martin)
6242: 2011 census figures from England and Wales reveal that 6242 people identify as members of the Heavy Metal religion. (GuyBarry)
6251: The 6,251 metre high Trango Tower in Pakistan is the largest rock wall in the world. (Big Martin)
6267: Whilst Chimborazo is "only" 6,267 metres high, due to its position near the equator, the top of the mountain is actually the furthest point from the earth's core. (Big Martin)
6272: There are 6272 ways to toss a coin 14 times and not get a run of four (heads or tails). (Brock)
6283: 2π = 6.283 to three decimal places, so a circle with a radius of 1000 units has a circumference of approximately 6283 units. (Brock)
6288: The top station of the Mount Washington Cog Railway is just below the summit of the mountain at 6,288 feet above sea level. (Big Martin)
6311: 63114 contains a pandigital substring, which means that means that it contains a sequence of ten digits that are all different:(Brock)
63114 = 1586327016495841
6330: On Instagram there is a photo of the world's longest pizza, at over 6330 feet. (Big Martin)
6340: After a deer cull in Toledo, Ohio in 2021, 131 deer were field dressed and processed into 6340 pounds of venison that was donated to area charities that provide food for the needy. (Brock)
6356: Including the two digits before the point, the first 32 digits of the binary expansion of π are:16 of these are 0's and 16 of these are 1's. However you have to get to 6356 digits before there are an equal number of 0's and 1's again. This statistical anomaly is exploited in the construction of the Lady Pi picture. (Brock)
11.001001000011111101101010100010...
6360: One of the largest land vehicles ever built was the Marion 6360, a giant power shovel also known as "The Captain". It started work with the Southwestern Illinois Coal Corporation in 1965. (Brock)
6371: Taking all its wobbliness into account, the average radius of our home planet is 6371 kilometres. (AlmondFacialBar)
6373: In 2019 Hong Kong had 6,373 registered franchised buses. (Big Martin)
6384: As already noted in #6271, the top of Chimborazo is the furthest distance on Earth from the Earth's centre - that distance being 6384 km to the nearest kilometre. (Brock)
6397: A chiffon scarf depicting the NGC 6397 globular cluster of stars is available. (Big Martin)
6418: Prior to being on Apollo 11, Neil Armstrong had piloted the X-15 rocket ship at 6,418 kilometres per hour on one occasion. (Big Martin)
6420: In 2012, BASE jumper Valery Rozov set a world record after jumping from a launch pad at 6,420 metres on Shivling mountain in a wing suit. (Big Martin)
6432: 6432 is divisible by each of its digits:(Brock)
6432/6 = 1072 6432/4 = 1608 6432/3 = 2144 6432/2 = 3216
6453: The world record for fastest railed vehicle is held by a rocket sled at Holloman Airforce Base, NM, that accelerated a 87 kg payload to 2886 metres per second, which scales up to 6,453 mph. (AlmondFacialBar)
6456: The deepest known shipwreck is that of the USS Johnston, at 6,456 metres. The Johnston was a destroyer sunk by the Japanese Navy in 1944. (Big Martin)
6459: The 6459th prime is 64591. (Brock)
6475: Messier 7 or M7, also designated NGC 6475 and sometimes known as the Ptolemy Cluster, is an open cluster of stars in the constellation of Scorpius. It was first recorded by Ptolemy in 130 AD. (Brock)
6484: Te Ara (The Encyclopaedia of New Zealand) document 6484 is about Frying Pan Lake at Waimangu. (Big Martin)
6505: The highest weather station in the western and southern hemispheres has recently been installed at 6,505 metres near the summit of Tupungato volcano in Chile. (Big Martin)
6508: 1 + 1/3 + 1/5 + 1/7 + 1/9 + 1/11 = 6508/3465 in lowest terms. (Brock)
6514: In 2013, Cote d'Ivoire had 6,514 km of paved roads. (Big Martin)
6521: The 6521 Project was a nationwide operation initiated by the Chinese Communist Party in 2009 to ensure "social stability" by cracking down on potential dissidents during anniversaries of political significance. The digits referred to the 60th anniversary of the founding of the People's Republic of China, the 50th anniversary of the 1959 Tibetan uprising, the 20th anniversary of the Tiananmen Square protests, and the 10th anniversary of the persecution of Falun Gong. (Brock)
6531: The constituency of Na h-Eileanan an Iar, formerly known as Western Isles, has the smallest electorate in the United Kingdom (around 21,000 registered voters). The current MP, Angus MacNeil of the SNP, was re-elected at the 2019 general election with 6531 votes out of a total of 14,447 cast. (Brock)
6537: The Red Spider Nebula, also known as NGC 6537, is a planetary nebula located near the heart of the Milky Way, in the northwest of the constellation Sagittarius. The central white dwarf produces a powerful and hot wind, which gives the nebula its unique 'spider' shape. (Brock)
6556: WPC6556 in the Epsilon - Alfred Russel Wallace Collection is a letter from Wallace regarding a biography of himself. (Big Martin)
6563: NM 6563, also known as the Sunspot Scenic Byway, is one of only three four-digit state highways in New Mexico. It takes its number from the wavelength of the Hydrogen-alpha spectral line (6563 Å) used by scientists at the National Solar Observatory to study the solar chromosphere and to locate solar flares on the Sun. (Brock)
6580: Imagine slicing up a cube-shaped cake with a series of planar cuts. The cake numbers represent the maximum number of pieces that it's possible to have after each successive cut. After 34 cuts, the maximum is 6580 pieces. (Brock)
6601: The B6601 is one of Britain's newest B-roads, having been given that number in 2020. Before that, it was... a motorway! To be precise, it was the Carnforth Link, connecting junction 35 of the M6 with the quarries at Over Kellet in Lancashire. It was, and still is, entirely single carriageway and less than half a mile long, but it was given motorway status because at its northern end you had no choice but to join another motorway. (Brock)
6602: According to this website Reading is home to 6,602 millionaires. (Big Martin)
6618: On 28 May 2021, the Trinidad and Tobago Guardian reported that 6618 people had received their first dose of the COVID-19 vaccine in the previous 24 hours. (Brock)
6625: In the 1956 Chester-le-Street by-election, 6,625 people voted for the Conservative candidate William Rees-Mogg, who went on to become editor of The Times (and father of Jacob). (Strawberry)
6641: A 2018 study of 6,641 people revealed that as many as 40% had a fictional first memory. (Big Martin)
6646: Episode 6646 of the Australian soap Neighbours, also known as "The Eclipse", was broadcast in May 2013 in Australia and the following month in the UK. It was no ordinary episode: during an annular eclipse, Detective Mark Brennan returned from the dead, Kyle Canning did serious damage to his eyesight by looking at the sun (after his dog Bossy ran away with his safety glasses) and there was also a child kidnapping. (Brock)
6651: Siegfried Nagl became the longest-serving mayor of Graz in Austria in June 2021, when he achieved 6651 days in office. (Article in German.) (Brock)
6656: No. 6656 on the North American Moth Photographers Group's website is Hypagyrtis piniata - the Pine Measuringworm Moth. (Big Martin)
6660: Meru Peak, elevation 6660 metres, is a mountain located in the Garhwal Himalayas, in the state of Uttarakhand in India. The name Meru probably originated from the Tamil word for "peak", making it "Peak Peak". (Brock)
6663: The 6663 method for making a Victoria sponge cake uses 6 ounces each of flour, butter and sugar and 3 eggs. (Big Martin)
6666: It hardly needs to be mentioned that the digits of 6666 are all identical. All the more remarkable, then, that its fourth power contains a string of ten digits that are all different:(Brock)
66664 = 1974518637029136
6690: Indian jewellers set a world record in 2018 by setting a ring with 6,690 diamonds. (Big Martin)
6692: 6692 Pisces the Sailfish is a book by Don Darkes. (Big Martin)
6706: The backyard ultra is a form of ultramarathon race where competitors must consecutively run the distance of 6706 metres in less than one hour. When each lap is completed, the remaining time within the hour is typically used to recover for the next hour's race. The distance was calculated so that a competitor who runs 24 laps covers a total of 100 miles. The race ends when the last runner or runners either concede or fail to finish the distance within the allotted time frame. (Brock)
6720: The Transgrancanaria Classic is run over almost 130 Km, has a positive slope of 6,720 metres and has to be completed by runners in a maximum of 30 hours. (Big Martin)
6732: Glendronach 1993 26 year-old cask 6732 whisky is available at a mere £275.00 a bottle. (Big Martin)
6748: In the astronomical catalogue New General Catalogue of Nebulae and Clusters of Stars, NGC 6748 doesn't exist. It was a misrecorded observation of NGC 6751. (Brock)
6764: 6764 is one less than the 20th Fibonacci number. The properties of the Fibonacci numbers are well known, but the numbers before them are significant in their own right. For instance, 6764 is the number of allowable transition rules for passing from one change to the next (on 19 bells) in the English art of bell-ringing. (Brock)
6773: The Human Rights Tattoo project is aiming to tattoo one character each of the Declaration of Human Rights on 6,773 people around the world. (Big Martin)
6778: The world coding record was set in 2017 by 6,778 people in Knoxville, Tennessee. (Big Martin)
6801: Here's a new twist on an old trick. Ask a friend to do the following:You then think very hard and announce "Was your answer 6801?" They say no. Puzzled, you ask them to give you the envelope. You take out the sheet of paper, hold it upside-down and say "Well that's what it says here!" (Source: The 1089 trick.) (Brock)
(1) Write down any three-digit number whose first and last digits differ by two or more. (2) Reverse the number, and subtract the smaller number from the larger. (3) Take the result, reverse it, and add it to the previous result. (4) Write the answer on a piece of paper and seal it in an envelope.
6813: An estimated 8% of scientists who participated in an anonymous survey of research practices at Dutch universities confessed to falsifying and/or fabricating data at least once between 2017 and 2020. Between October and December 2020, study authors contacted nearly 64,000 researchers at 22 universities in the Netherlands, 6813 of whom completed the survey. (Brock)
6819: HR 6819, also known as HD 167128 or QV Telescopii, is a double or triple star system in the southern constellation of Telescopium. A May 2020 study hypothesized that the system has the closest known black hole, and the first one in a system visible to the naked eye, although three later papers argued that it consists of two mainstream stars and no black hole at all. (Brock)
6822: In 2005, a Ukrainian team set a world depth record by reaching 6,822 feet below ground in a cave in Georgia. (Big Martin)
6831: Denise Lewis's personal best score for the heptathlon is 6831 points, set at the Décastar meeting in 2000. (Brock)
6846: In 2001, 6,846 young people from 159 schools sang at Manchester Evening News Arena, setting a Guinness World Record. (Big Martin)
6866: According to The Free Dictionary, 6866 is a New Zealand police radio code meaning "uses firearm to prevent or resist arrest". (Brock)
6872: Kebnekaise, Sweden's highest mountain, is now 6,872 feet high - having shrunk by nearly 6.5 feet since 2020 due to melting of its icy peak from global warming. (Big Martin)
6888: The 6888th Central Postal Directory Battalion was an all-black unit of the U.S. Women's Army Corps operational in late WW2 and just after. (Big Martin)
6889: 6889 is not only a perfect square (832), but also strobogrammatic (the same upside-down). It's the first such number greater than 1, and only two higher numbers of this type are known: 69169 and 109181601. (Brock)
6905: Russia's new hypersonic Tsirkon missile is able to fly at Mach 9, or around 6905 mph. (Brock)
6906: The cricketer Fred Grace, the younger brother of the more well-known W G Grace, had a career run tally of 6,906 before his untimely death at only 29. (Big Martin)
6911: The Vela incident, also known as the South Atlantic Flash, was an unidentified double flash of light detected by the American Vela satellite OPS 6911 on 22 September 1979 near the Prince Edward Islands in the Indian Ocean. The cause of the flash remains officially unknown, but today most independent researchers believe that it was caused by a nuclear explosion - perhaps an undeclared nuclear test carried out by South Africa and Israel. (Brock)
6930: Q0906+6930 was the most distant known blazar at the time of its discovery in July, 2004. The engine of the blazar is a supermassive black hole approximately 2 billion times the mass of the Sun. It is one of the most massive black holes on record. (Brock)
6940: At the Hartlepool by-election in May 2021, the Conservative candidate Jill Mortimer gained the seat from Labour with a majority of 6940 - only the second time since 1982 that the governing party had gained a seat from the opposition in a by-election, and the first Conservative win in the seat since it was created in 1974. (Brock)
6954: According to a recent report, 6,954 people are serving life sentences in UK prisons. (Big Martin)
6961: The record for blowing party blowers simultaneously was set by 6,961 people in Tokyo on November 21 2009. (Big Martin)
6962: The tallest mountain in the world outside Asia is Mount Aconcagua in Argentina, at 6962 metres above sea level (according to Giorgio Poretti, who measured its height using GPS technology in 2001). (Brock)
6973: An article about the possible distance travelled by football fans reveals that Middlesbrough supporters would have to travel 6,973 miles to attend all of the club's away games in a season. (Big Martin)
6982: The sum of the first 6982 composite numbers is a perfect square, namely 28,185,481 = 53092. The only smaller values of n for which the sum of the first n composite numbers is a perfect square are 6, 21 and 80. (Brock)
6988: The largest cruise ship in the world, Royal Caribbean's Wonder of the Seas, completed its first sea trials in September 2021. It can accommodate 6988 guests across 16 decks with 24 guest elevators and 2300 crew members. (Brock)
6992: The Austrian town of Mittelberg lies in a valley that is only accessible by road from Germany, even though it is contiguous with the rest of Austria. It thus has a German postcode in addition to its Austrian postcode of 6992. (Brock)
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