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How to square the circle for real. Spaghetti sort: An algorithm for sorting rods of spaghetti. Squircle: Not quite a square, not quite a circle, definitely not a Pokémon either. Taxicab number: Never tell a Numberphile that a number is uninteresting. Tetraphobia: Sometimes found in conjunction with triskaidekaphobia (see below) in East Asian ...
A property of weird numbers is that if n is weird, and p is a prime greater than the sum of divisors σ(n), then pn is also weird. [4] This leads to the definition of primitive weird numbers: weird numbers that are not a multiple of other weird numbers (sequence A002975 in the OEIS). Among the 1765 weird numbers less than one million, there are ...
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.
Simon Elmore won the Guinness World Record for most straws in the mouth on August 6, 2009. He held 400 straws between his jaws for 10 seconds. He held 400 straws between his jaws for 10 seconds. 2.
Numbers very close to, but below one are often expressed in "nines" (N – not to be confused with the unit newton), that is in the number of nines following the decimal separator in writing the number in question. For example, "three nines" or "3N" indicates 0.999 or 99.9%, "four nines five" or "4N5" is the expression for the number 0.99995 or ...
Guinness World Records, known from its inception in 1955 until 1999 as The Guinness Book of Records and in previous United States editions as The Guinness Book of World Records, is a British reference book published annually, listing world records both of human achievements and the extremes of the natural world.
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A visualization of the surreal number tree. In mathematics, the surreal number system is a totally ordered proper class containing not only the real numbers but also infinite and infinitesimal numbers, respectively larger or smaller in absolute value than any positive real number.