9384251domain: NPropertiesPrimalityPrimeyesAppears in sequencesLargest prime factor of 5^n - 1.at n=24A074479a(n) = 5^(4n+2) - 5^(3n+2) + 3 * 5^(2n+1) - 5^(n+1) + 1: the left Aurifeuillian factor of 5^(10n+5) - 1.at n=2A220979Prime numbersat n=626422