5099893domain: NPropertiesPrimalityPrimeyesAppears in sequencesBertrand primes: a(n) is largest prime < 2*a(n-1) for n > 1, with a(1) = 2.at n=23A006992a(n) = largest prime <= 2a(n-1), with a(0)=1.at n=24A185231Prime numbersat n=354964