3124999

Properties

Appears in sequences

• a(n) = n*5^n - 1.at n=7A064751
• Primes of the form 2^r*5^s - 1.at n=27A077313
• Smallest prime p such that 5^n divides p^4 - 1.at n=7A125610
• Smallest odd prime base q such that p^8 divides q^(p-1) - 1, where p = prime(n).at n=2A125649
• a(n) = 8*5^n-1.at n=8A198767
• Generalized Woodall primes: any primes that can be written in the form n*b^n - 1 with n+2 > b > 2.at n=6A210340
• Prime numbersat n=225175