106669domain: NPropertiesPrimalityPrimeyesAppears in sequencesBeastly primes (version 2): primes containing 666 as a substring.at n=17A131645a(1) = 1. For n > 1, a(n) is the least odd prime p which cannot be represented as the sum of a subset of the previous terms.at n=20A379045Prime numbersat n=10166