14566777domain: NPropertiesPrimalityPrimeyesAppears in sequencesTrajectory of 1 under map n->23n+1 if n odd, n->n/2 if n even.at n=26A033968Trajectory of 3 under map n->23n+1 if n odd, n->n/2 if n even.at n=22A037109Prime numbersat n=944503