26264...40159 (336-digits)

This number is a prime.

               262641 7256821278 3933466893 8847190331 7983111453 3361679295
8372838424 8571567750 0722710245 4928148183 1678232115 3464194329 9795962309
5798746829 1356860865 0959193370 8244748632 8214503758 5560618568 7789066794
0499332336 7715662527 8749774714 2446747281 8616772123 8664217142 3202928482
8476022113 9877817176 5848636959 8393166193 0322854971 5383745476 6280540159

+ The smallest prime in the largest known Bi-Twin chain of primes (as of July 2003): 633604755*2^1085+/-1, 633604755*2^1086+/-1. [Rupinski]

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