730753domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest prime factor of composite Mersenne numbers: lpf(2^p-1) where 2^p-1 is composite and p is prime.at n=27A136030Primes p such that the equation x^64 == -2 (mod p) has a solution, and ord_p(-2) is even.at n=26A163186Prime numbersat n=58835