511223domain: NPropertiesPrimalityPrimeyesAppears in sequencesCombined Diophantine Chebyshev sequences A054488 and A077413.at n=15A077241Bisection (odd part) of Chebyshev sequence with Diophantine property.at n=7A077413Primes p such that p+2 is the square of a product of 3 distinct primes.at n=13A164519Prime numbersat n=42385