56756

Appears in sequences

• Numbers k such that 7*10^k + R_k + 2 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=6A103050
• Least integer k such that k/2^n > sqrt(3).at n=15A293325
• The integer k that minimizes |k/2^n - sqrt(3)|.at n=15A293326