539401

Properties

Appears in sequences

• 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=19A071367
• Class 8+ primes.at n=29A081636
• Primes p such that (p+1)/2, (p+2)/3 and (p+3)/4 are also primes.at n=22A163573
• Primes p such that (p+1)/2, (p+2)/3, (p+3)/4 and (p+4)/5 are also prime.at n=3A204592
• Indices of tetrahedral numbers that are Fermat pseudoprimes to base 2.at n=21A321866
• Numbers k such that 1/(1/phi(k) + 1/phi(k+1) + 1/phi(k+2) + 1/phi(k+3) + 1/phi(k+4)) is an integer.at n=7A341745
• 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=22A350699
• Prime numbersat n=44535