178537

Properties

Appears in sequences

• Numbers n such that n_0=n_1=n_2, where n_i = (n+i)-th prime - sigma(n+i) - phi(n+i).at n=4A048791
• Numbers k such that one of k, k+1, k+2 is prime and the other two are semiprimes, and one of R(n), R(n+1), R(n+2) is prime and the other two are semiprimes, where R = A004086.at n=37A354285
• First of four consecutive primes p,q,r,s such that q*s - p*r is a square.at n=16A358922
• Primes p such that 2p - 1, 3p - 2, (p + 1)/2, and (p + 2)/3 are also prime.at n=7A386540
• Prime numbersat n=16205