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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The smallest of three primes formed by concatenating two consecutive doubledigit Pythagorean primes, i.e., primes of form 4n+1. The other two are 4153 and 6173. [Loungrides] The largest known prime p equal to the digital length of a Mersenne prime, i.e., of the 21st Mersenne prime. Note that the order of this Mersenne prime, i.e., 21, followed by p and p followed by 21 are also primes, i.e., 212917 and 291721. [Loungrides] The smallest of only two primes of form n^2 + 1 that is concatenated from two doubledigit primes, i.e., 54^2+1 = 2917. (The other is 3137 = 56^2+1). [Loungrides] Largest known prime of the form reversal(2^p)1 such that 2^p1 is a Mersenne prime, (case p=13). [Sariyar]
(There are 3 curios for this number that have not yet been approved by an editor.)
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