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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) Just showing those entries submitted by 'Silva': (Click here to show all) There are 4 twodigit primes formed by concatenation of prime digits. [Silva]4 is the smallest number between twin primes. [Silva] The only semiprime expressed by a prime p in two ways: p^2 and p+p. [Silva] The number of 4digit primes formed from the first 4 odd digits. [Silva] 4!!3!!+2!!1!! is a 4!digit prime. [Silva] 4 is the number of primes formed from 4 digits summing up to 4 [Silva] The only digit that forms a prime with the previous digit (43). [Silva] 4 is the number of 4digit primes formed from the first 4 natural numbers: 1423, 2143, 2341, 4231. [Silva]
(There are 6 curios for this number that have not yet been approved by an editor.)
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