120049

Properties

Appears in sequences

• Initial terms of chains consisting of four consecutive integers, for none of which is the value of sigma-function divisible by six.at n=10A097020
• Primes p such that (12*p - 1, 12*p + 1) and (18*p - 1, 18*p + 1) are twin primes.at n=13A138660
• Primes of the form m = 7^i + 7^j - 1, where i > j >= 0.at n=4A239717
• Numbers m such that each of the four consecutive integers m, m+1, m+2, m+3 has squarefree rank 1.at n=7A290340
• Prime k with sigma(sigma(sigma(k))) < 3*k + 1.at n=27A320517
• Starts of runs of 4 consecutive numbers that have mutually distinct exponents in their prime factorization (A130091).at n=20A342030
• Starts of runs of 4 consecutive integers in A268375.at n=9A368404
• Prime numbersat n=11306