389047domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that are the sum of 251 consecutive primes.at n=20A215996a(n) is the first number that starts a sequence of exactly n primes x(1), ..., x(n) where x(i+1) = A004093(x(i)) is the digit reversal of 2 * x(i).at n=5A373765Prime numbersat n=32989