3979433domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) is the (conjectured) largest number k that is zeroless in every base b such that n <= b < k.at n=4A319033a(n) is the (conjectured) largest number k that is zeroless in every base b such that n <= b < k.at n=5A319033Prime numbersat n=281838