51613

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 2x + 5.at n=25A023304
• Numbers having four 7's in base 9.at n=22A043484
• Smaller of two consecutive primes which are anagrams of each other.at n=16A069567
• List of Ormiston prime pairs.at n=32A072274
• Primes of the form 20*k^2 + 32*k + 13.at n=23A154414
• Smaller prime p in Ormiston pairs (p, q) with q - p = 18.at n=14A163678
• Duplicate of A163678.at n=14A175517
• Primes of form a^2+b^2 such that a^4+b^4 and a^8+b^8 are primes.at n=32A182313
• Numbers k such that 3^k - 22 is prime.at n=16A219043
• Smaller of two consecutive primes whose product of digits is equal and nonzero.at n=21A230083
• Centered 22-gonal primes.at n=28A276262
• Prime numbersat n=5283