Repunit primes: Difference between revisions
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Every standard integer base has repunits since every base has the digit 1. This task involves finding the repunits in different bases that are prime.
In base two, the repunits 11, 111, 11111, 1111111, etc. are prime. (These correspond to the [[wp:Mersenne_prime|
In base three: 111, 1111111, 1111111111111, etc.
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;* [[oeis:A006032|OEIS:A006032 - Numbers k such that (14^k - 1)/13 is prime]] (base 14)
;* [[oeis:A006033|OEIS:A006033 - Numbers n such that (15^n - 1)/14 is prime]] (base 15)
;* [[Circular_primes]]
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