151733domain: NPropertiesPrimalityPrimeyesAppears in sequencesLargest prime factor of n!! + (n+1)!!.at n=30A118333Numbers n with property that n==5 (mod 12) and 2^(m-1)=1 (mod m) where m=(2*n-1)*n.at n=12A188063Prime numbersat n=14003