Permutable prime

Permutable prime
Conjectured no. of termsInfinite
First terms2, 3, 5, 7, 11, 13, 17, 31, 37, 71, 73, 79, 97, 113, 131, 199
Largest known term⁠108177207 − 1/9⁠
OEIS index
  • A003459
  • Absolute primes (or permutable primes): every permutation of the digits is a prime.

A permutable prime, also known as anagrammatic prime, is a prime number which, in a given base, can have its digits' positions switched through any permutation and still be a prime number. H. E. Richert, who is supposedly the first to study these primes, called them permutable primes, but later they were also called absolute primes.

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