31259

Properties

Appears in sequences

• Number of close-packings with layer-number 3n and space group R3m.at n=15A011956
• Number of true prime powers whose binary order, ceiling(log_2(p^x)), is n.at n=40A036380
• Primes prime(j) such that prime(j)-j is a true power of prime.at n=14A083240
• Numbers that appear exactly five times in A101402. (Also indices of fives in A101403.).at n=21A129117
• Primes q such that p = (r+q+s-1)/2 is a balanced prime, where r, q, s are consecutive primes.at n=12A129190
• Primes of the form 2n^3+9.at n=4A201111
• Lesser of consecutive primes whose sum is a palindromic number.at n=34A242386
• Prime numbers p such that p - primepi(p) is a square, where primepi is the prime counting function.at n=19A245061
• Iterative procedure in A316941 applied to the odd composite numbers (A071904) (a(n) = -1 if no prime is ever reached).at n=21A276662
• Greatest of 4 consecutive primes with consecutive gaps 2, 4, 6.at n=35A290706
• Primes k such that the concatenation of (b, k, b) and (k, b, k) are both prime, where b is the binary representation of k.at n=8A389801
• Prime numbersat n=3370