46240001

Properties

Appears in sequences

• Primes of the form n^2 + 1 such that (n - 1)^2 + 1 and (n + 1)^2 + 1 are semiprimes.at n=15A234693
• a(n) = 1 + Product_{k=1..n-1} a(gcd(n,k)).at n=14A349785
• Prime numbersat n=2788631