51239

Properties

Appears in sequences

• Primes with 23 as smallest positive primitive root.at n=17A061335
• a(0) = 1, a(n) = 1 + 2*3 + 4*5 + 6*7 + ... + (2n)*(2n+1) for n > 0.at n=33A098931
• Primes p such that p+2, p*(p+2)+18 and p*(p+2)+20 are also prime.at n=8A130737
• Number of (w,x,y,z) with all terms in {1,...,n} and 2w*x<=3*y*z.at n=17A211921
• Primes of the form p^2 + q^2 + 21, where p and q are consecutive primes.at n=20A229075
• Smallest prime that is the (sum, k*prime(k),k=m,..n+m-1) for some m, or 0 if no such m exists.at n=29A268467
• Primes of the form A132583(k)*42 - 43.at n=2A298699
• Prime numbersat n=5243