231197domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes with d digits (d>0) which have more than 2d distinct primes as substrings.at n=13A168169Primes with twelve embedded primes.at n=9A179922Numbers k such that 473*2^k+1 is prime.at n=11A319485Prime numbersat n=20534