688087

Properties

Appears in sequences

• n is in the sequence if n is prime, (n-1)/3^A007949(n-1) is a squarefree number, A007949(n-1) < 3 and every prime divisor of n-1 is in the sequence.at n=16A229290
• Odd integers k such that 5^((k-1)/2) + 1 == 0 (mod k*(k-1)/2).at n=30A337829
• Prime numbersat n=55670