163859domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 7n^2 - 4.at n=15A201850Numbers m such that m-2, m-1, m+1, m+2 cannot all be represented in the form x*y + x + y for values x, y with x >= y > 1.at n=31A256386Prime numbersat n=15003