232091domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p that set a new record for the size of the smallest prime q such that q^(p-1) == 1 (mod p^2), i.e., such that p is a base-q Wieferich prime.at n=43A289379Primes in A194627.at n=27A377791Prime numbersat n=20608