701 (another Prime Pages' Curiosity)
 Curios: Curios Search:   Participate: 701, 7001, 70001, and 700001 are each prime. [Brown] 2701 + 701 is prime. [Honaker and De Geest] This prime can be written as 54 + 43 + 32 + 21 + 10. [Kulsha] The number of named openings and variations listed in the 1987 edition of The Oxford Companion to Chess by Hooper and Whyld. [McCranie] There are currently 701 types of pure breed dogs. [BBC] The number of UFO cases that Project Blue Book left classified as "unknown." [McCranie] The IBM 701 was the company's first production-line electronic digital computer. (It was announced to the public in 1952.) Smallest prime whose square (701^2 = 491401) contains all of square digits only. [Gupta] The smallest emirp p such that 2p has a sum of digits that is also an emirp (941). [Beedassy] e (2.718...) to the power phi (Golden ratio 1.618...) is approximately 5. A much better approximation is given by 701/139, both numbers prime. [Menhinick] If A=2, B=3, C=5, D=7, ... , Z=101, then 'AN ISOLATED PRIME NUMBER' is an isolated prime number. [Homewood] (There are 5 curios for this number that have not yet been approved by an editor.) Prime Curios! © 2000-2018 (all rights reserved)  privacy statement