61417domain: NPropertiesPrimalityPrimeyesAppears in sequencesLeast prime p == -1 (mod n) that divides Fibonacci((p+1)/n), or 0 if no such prime exists.at n=40A168172Primes p for which exactly six bases b with 1 < b < p exist such that p is a base b Wieferich prime.at n=4A255209Prime numbersat n=6179