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Prime repunits (Posted on 2016-11-24)

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)

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Puzzle Answer

Comment 6 of 6 |

The only base 8 prime repunit is 111, whose decimal (base ten) equivalent is 73.

Posted by K Sengupta on 2023-08-24 02:25:41

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