357575753domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest palindromic prime using only prime digits (2,3,5,7) and having a sum of digits = prime(n), or 0 if no such number exists.at n=14A083183Prime worms [successive digit differences with absolute value of 2].at n=21A089316Prime numbersat n=19188279