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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) 87 = 3 * 29, and curiously 87^{2} + 3^{2} + 29^{2} and 87^{2}  3^{2}  29^{2} are primes. [Luhn] 87 = 2^{2} + 3^{2} + 5^{2} + 7^{2}. [Sladcik] 87 is the largest number that yields a prime when any of the onedigit primes 2, 5 or 7 is inserted between any two digits. The only other such number is 27 (and trivially, the 1 digit numbers). [Hasler]
(There are 3 curios for this number that have not yet been approved by an editor.)
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