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8191 has a partner (Posted on 2018-07-26)

8191 is a more-than-two-digit repunit prime in two bases:
8191 = 111 in base 90 = 1111111111111 in base 2.

Find the only other number with this property.

No Solution Yet Submitted by Ady TZIDON

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re: computer solution

| Comment 2 of 3 |

(In reply to computer solution by Charlie)

pls correct typo 8195 => 8191

Posted by Ady TZIDON on 2018-07-26 12:13:27

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