204700049

Properties

Appears in sequences

• Numbers m for which p(m, 2)*p(m, 5) = p(m, 10), where p(m, b) is the period of repeating digits of 1/m in base b.at n=27A334488
• Primes p that divide both 3^k-2 and 5^k-1 for some k.at n=4A360761
• Primes p such that gcd(ord_p(2), ord_p(5)) = 1.at n=4A382414
• Prime numbersat n=11324702