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Prime repunits (Posted on 2016-11-24) Difficulty: 2 of 5
A number like 11, 111, or 1111 i.e. a number containing only the digit 1
is called repunit.

List all base-8 prime repunits.

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.5000 (2 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionSolutionBrian Smith2018-12-15 22:42:37
Non-trivial.broll2016-11-25 22:20:47
Some ThoughtsAlmost a proofBrian Smith2016-11-24 21:14:05
Some Thoughtscomputer explorationCharlie2016-11-24 17:59:10
SolutionRepunitMath Man2016-11-24 09:53:27
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