659999domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 32*k-1 such that 4*k-1, 8*k-1 and 16*k-1 are also primes.at n=12A101798Primes with digit sum = 47.at n=13A106778The lesser of twin prime pairs with each prime in a different millennia.at n=16A158861Prime numbersat n=53564