293621domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrime numbers p such that the number of partitions of p is also a prime.at n=25A038601Expansion of Product_{k>=1} (1 + sigma(k)*x^k), where sigma(k) is the sum of the divisors of k (A000203).at n=24A316962Prime numbersat n=25505