Repunit primes: Difference between revisions
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m (sp, circular primes link) |
Thundergnat (talk | contribs) m (slightly less ambiguous) |
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In base three: 111, 1111111, 1111111111111, etc. |
In base three: 111, 1111111, 1111111111111, etc. |
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''Repunit primes, by definition, are also [[circular primes]].'' |
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Any repunit in any base having a composite number of digits is necessarily composite. Only repunits (in any base) having a prime number of digits ''might'' be prime. |
Any repunit in any base having a composite number of digits is necessarily composite. Only repunits (in any base) having a prime number of digits ''might'' be prime. |
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