1425601

Properties

Appears in sequences

• Primes with 38 as smallest positive primitive root.at n=21A061740
• Primes p such that p = 2*phi(sigma((p-1)/2))+1.at n=6A260476
• Numbers k such that k = 2*phi(sigma((k-1)/2)) + 1.at n=10A266165
• Primes p such that p == 1 (mod A001414(p-1)) and p == 1 (mod A001414(p+1)).at n=29A339181
• Prime numbersat n=108885