146449domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that x^54 = 2 has no solution mod p, but x^18 = 2 has a solution mod p.at n=34A059666a(n)= 5*a(n-1) -a(n-2) -a(n-3).at n=10A108143Primes in A126554.at n=20A126555Largest prime factor of the n-th Pell number, A000129(n).at n=25A264137Prime numbersat n=13548