8389163domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest prime p > 3 such that p-1 has a prime factor > (p-1)^(n/(n+1)).at n=21A111671p-INVERT of the positive integers, where p(S) = 1 - S^2 - S^3.at n=15A290900Prime numbersat n=564205