15307263442931

This number is a prime.

1530 7263442931

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The smallest prime p such that p + nextprime(p) is an integer with 40 prime factors, repetitions counted, i.e., 15307263442931 + 15307263442957 = 30614526885888 = 2^35*3^4*11. Found by Jean Brette. [Rivera]

Submitted: 2019-01-27 15:31:50; Last Modified: 2019-01-27 15:49:31.