146519domain: NPropertiesPrimalityPrimeyesAppears in sequencesRecord-setting values of q(n), the minimal prime q such that n(q+1)-1 is a prime p (i.e., q(n) > q(j) for all 0 < j < n).at n=9A062256Sum of distinct products i*j with 1 <= i, j <= n.at n=33A321165Prime numbersat n=13551