1000357domain: NPropertiesPrimalityPrimeyesAppears in sequencesLargest prime factor of n! + 1.at n=17A002583a(n) is the smallest n-digit prime p such that the concatenation a(1)a(2)...a(n-1)p is prime, with a(1) = 2.at n=6A049462Prime numbersat n=78526