213949

Properties

Appears in sequences

• Primes p such that the p-1 digits of the binary 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=32A096339
• Primes of the form x^2 + 5*y^2, where x and y=x+1 are consecutive natural numbers.at n=41A176608
• Primes p for which exactly six bases b with 1 < b < p exist such that p is a base b Wieferich prime.at n=14A255209
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 633", based on the 5-celled von Neumann neighborhood.at n=8A273300
• Prime numbersat n=19123