333535333domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest n-digit prime containing only digits 3 and 5, or 0 if no such prime exists.at n=8A036941Palindromic primes with just two distinct prime digits.at n=26A058375Palindromic primes using only digits 3 and 5.at n=7A138584Prime numbersat n=17965423