26 What are “permutable primes”?

A258706 – OEIS

A permutable prime (also absolute prime) is a prime number for which any rearrangement of its digits also results in a prime number.

For example, 113 is a permutable prime because 131 and 311 are also prime.

The first permutable prime numbers in the decimal system are the following:
2, 3, 5, 7, 11, 13, 17, 31, 37, 71, 73, 79, 97, 113, 131, 199, 311, 337, 373, 733, 919, 991,

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