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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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Subject
Author
Date
proof of uniqueness
Daniel
2018-07-27 07:19:07
re: computer solution
Ady TZIDON
2018-07-26 12:13:27
computer solution
Charlie
2018-07-26 11:26:45
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