663601

Properties

Appears in sequences

• Numbers n such that 177*2^n-1 is prime.at n=32A050840
• Numbers n such that n+0, n+1, n+2, n+3 and n+4 are, in some order, 1 * a prime, 2 * a prime, 3 * a prime, 4 * a prime and 5 * a prime.at n=22A071367
• Primes p such that (p+1)/2, (p+2)/3 and (p+3)/4 are also primes.at n=25A163573
• Primes p such that (p+1)/2, (p+2)/3, (p+3)/4 and (p+4)/5 are also prime.at n=5A204592
• Primes p=prime(i) of level (1,6), i.e., such that A118534(i) = prime(i-6).at n=31A216180
• E.g.f.: exp( Sum_{n>=1} sigma(n,n) * x^(n^2) / n^n ).at n=9A226890
• Numbers k such that tau(k) + tau(k+1) + tau(k+2) + tau(k+3) + tau(k+4) = 20, where tau is the number of divisors function A000005.at n=25A350699
• Prime numbersat n=53838