300030001

Properties

Appears in sequences

• Primes of the form 3*10^(2*n) + 3*10^n + 1.at n=2A160432
• a(n) = 3*10^(2*n) + 3*10^n + 1.at n=4A177019
• Primes of the form b*10^(2*k) + b*10^k + 1 for 1 <= b <= 9, k >= 0.at n=16A309739
• Prime numbersat n=16253880