313331

Properties

Appears in sequences

• Primes that contain digits 1 and 3 only.at n=27A020451
• Primes formed by the concatenation n, n+2, n.at n=7A068680
• If k is a number with exactly two distinct decimal digits, say a and b, neither of which is 0 (i.e., a member of A101594), define the self-complement of k, SC(k), to be the number obtained by replacing a with b and vice versa. E.g. SC(232233) = 323322. Sequence contains primes p such that SC(p) is also a prime.at n=37A083983
• Twin prime pairs using digits 1 and 3 only.at n=6A111070
• Primes of the form XYYX, where Y is a single digit.at n=13A214290
• Primes that are the concatenation of prime(n) and prime(n+2).at n=16A253245
• Prime numbersat n=27061