51329

Properties

Appears in sequences

• Primes p such that the p-1 digits of the ternary (base 3) expansion of k/p (for k=1,2,3,...,p-1) fit into the k-th row of a magic square grid of order p-1.at n=14A096660
• Odd prime factors of generalized Fermat numbers of the form 11^(2^m) + 1 with m >= 0.at n=7A273949
• a(n) = Sum_{k=0..floor(n/3)} Stirling2(k,n - 3*k).at n=36A357940
• Smallest primitive prime factor of 11^n-1.at n=31A379644
• Prime numbersat n=5250