72560

Appears in sequences

• n*10^4-1, n*10^4-3, n*10^4-7 and n*10^4-9 are all prime.at n=19A064978
• Numbers k such that k^2 + k - 1 and k^2 + k + 1 are twin primes and (k + 1)*(k + 1) + k + 1 - 1 and (k + 1)*(k + 1) + k + 1 + 1 are also twin primes.at n=16A088498
• Numbers k such that 7*10^k + 3*R_k + 6 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=13A103056
• Number of tilings of a 5 X n rectangle using n pentominoes of shapes V, U, X, N.at n=23A247127
• Numbers k such that Bernoulli number B_{k} has denominator 230010.at n=26A295593