246017

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 8x + 1.at n=26A023291
• a(n) is the largest prime of the form x^2 + 1 <= 2^n.at n=17A083849
• Primes p of the form 4*n^2 + 1 such that 4*p^2+1 is also prime.at n=10A121834
• Central coefficients of number triangle A113582.at n=31A154323
• Primes of the form 4m^2 + 1 such that the next prime of this form is a record distance away.at n=7A215233
• Prime numbers of the form (n*(n+1)/2)^2 + 1.at n=9A262182
• Prime numbersat n=21715