148721

Properties

Appears in sequences

• Smallest prime factor of n^n + 1.at n=19A055385
• Smallest factor of (2n)^(2n) + 1.at n=9A055386
• Primes p such that p+2, p*(p+2)+18 and p*(p+2)+20 are also prime.at n=14A130737
• G.f.: (21 + 101*x + 97*x^2 + 22*x^3 + x^4)/(1 - x)^5.at n=10A160769
• a(n) is the smallest prime factor of n^n+1 having the form k*n+1.at n=18A187022
• Prime numbersat n=13732