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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The consecutive primes 1399 and 1409 have the property that 1399*1409 +/ (1399+1409) are both prime. Moreover, 7^13996^1399 is prime, and so is (12*10^139921)/99 = 1212...2121, a smoothly undulating palindromic prime with 1399 digits. [Hasler] In 1882, Lucas noted that Le Lasseur found the first known prime factor (1399) of the Mersenne number 2^{233}1. The sum of all 3 3digit primes ending with 33 is prime. [Bopardikar] 1399 is the smallest prime such that 1399+10, 1399+100, 1399+1000, 1399+10000 and 1399+100000 are primes. [Rivera]
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