14929919domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 32*k-1 such that 4*k-1, 8*k-1, 16*k-1 and 64*k-1 are also primes.at n=15A101998a(n) = 5*12^n - 1.at n=6A199107Primes of the form 5*n^3-1.at n=21A200910Prime numbersat n=966480