77813

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 24.at n=19A031612
• 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=18A096660
• Smallest of four consecutive primes whose sum is a square.at n=17A206280
• Primes p such that both (p^2 + 5)/6 and (p^4 + 5)/6 are prime.at n=44A253925
• Prime-indexed primes p such that 2*p + 1 is also a prime-indexed prime.at n=17A318294
• Prime numbersat n=7649