1026439domain: NPropertiesPrimalityPrimeyesAppears in sequencesTrajectory of 1 under map n->17n+1 if n odd, n->n/2 if n even.at n=31A033965Seven-digit distinct-digit primes.at n=26A074667Primes which have one or more occurrences of exactly seven different digits.at n=26A235159Prime numbersat n=80447