This number is a prime.
The number of ways to fold a strip of ten blank stamps. Note that the digits are distinct primes. [Beedassy]
The earliest prime digit prime containing all prime digits in the decimal expansion of e. It starts at position 1638 after the decimal point. [Gupta]
The only prime permutation of 2357 such that the concatenation of both in any order forms a prime: 23573527 ; 35272357. [Beedassy]
The largest distinct-prime-digit emirp made up from the complementary digits of another prime, i.e., 7583. [Loungrides]
The 3527th emirp (172351) and the 3527th brilliant number (135127) are anagrams of each other and also contain the four prime digits. [Gaydos]
The only prime-digit prime containing the four prime digits once each that has no multidigit primes in the substrings of its digits. [Gaydos]