219293domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrime p3 of the sequence A164077: a^b + c^d = p1 (A164077), where a, b, c, d are primes and a + b + c + d = p2 (A164078), where p2 is prime and conc(abcd) = p3 (concatenation of a, b, c , d) is also prime.at n=4A164079Primes of the form 7n^2 - 10.at n=9A201855Prime numbersat n=19550