1623077

Properties

Appears in sequences

• Primes of the form 81*k^2 - 72*k + 17.at n=16A154276
• a(n) = 6561*n^2 - 3564*n + 485.at n=16A156774
• Primes of the form n^2+1 such that (n+2)^2+1 is also prime.at n=16A206328
• First of two consecutive (primes of the form n^2+1) with no semiprime of the same form between them.at n=20A242109
• Prime numbersat n=122757