132961domain: NPropertiesPrimalityPrimeyesAppears in sequencesRow 3 of square array defined in A047671.at n=40A047672Primes p = 1 mod 6 such that all three iterations p=(6p+1) give primes = 1 mod 6.at n=27A210686Primes expressible as concatenation of phi(sigma(n)) and sigma(phi(n)).at n=16A228444Primes of form n^2 + 20736.at n=26A256840Prime numbersat n=12411