72277

Properties

Appears in sequences

• Primes that contain digits 2 and 7 only.at n=12A020459
• Primes that contain only the digits (2, 5, 7).at n=30A214705
• Primes having only {2, 7, 9} as digits.at n=40A261182
• Primes having only {0, 2, 7} as digits.at n=22A261267
• a(n) is the smallest prime p such that n = Omega(p^n - 2) = Omega(p^n + 2) where Omega = A001222.at n=9A328445
• Primes having only {2, 4, 7} as digits.at n=26A385784
• Primes having only {2, 6, 7} as digits.at n=25A385787
• Primes having only {2, 7, 8} as digits.at n=25A385789
• Prime numbersat n=7155