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Primes vs ones (Posted on 2014-03-27) Difficulty: 3 of 5
Prove - or find a counterexample:

All primes p greater than 5 divide a number
whose decimal representation consists of (p-1) ones.

No Solution Yet Submitted by Ady TZIDON    
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Comments: ( You must be logged in to post comments.)
  Subject Author Date
Another proofxdog2014-03-28 16:01:57
ProofDaniel2014-03-28 01:07:56
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