1747591

Properties

Appears in sequences

• Primes p such that p^2 divides 13^(p-1) - 1.at n=2A128667
• Numbers n such that 13^phi(n) == 1 (mod n^2), where phi(n) = A000010(n).at n=7A257660
• Primes p that satisfy q^(p-1) == 1 (mod p^2), i.e., are base-q Wieferich primes, for a prime q dividing p-1.at n=4A355545
• Prime numbersat n=131431