[seqfan] Absolute primes that are not repunits
Felix Fröhlich
felix.froe at gmail.com
Tue Jun 26 15:50:43 CEST 2018
Dear SeqFans,
absolute primes are primes p where any prime resulting from a permutation
of the digits of p is also prime. Some sequences already in the OEIS are:
A003459: Absolute primes
A129338: Absolute primes with at least two different digits (thus excluding
repunit primes and single digit primes)
A258706: Absolute primes: every permutation of digits is a prime (only the
smallest representatives of the permutation classes are shown)
Given the above sequences, should the following sequence also be in the
OEIS?
Absolute primes that are not repunits.
2, 3, 5, 7, 13, 17, 31, 37, 71, 73, 79, 97, 113, 131, 199, 311, 337, 373,
733, 919, 991
It is the relative complement of A004022 in A003459 and a supersequence of
A129338.
Best regards
Felix
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