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Topic: Primality of certain numbers
Replies: 5   Last Post: Dec 6, 1996 8:21 PM

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Igor Sheyn

Posts: 11
Registered: 12/8/04
Primality of certain numbers
Posted: Dec 5, 1996 8:37 PM
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What is the status primality of integers that consist of all 1's?
I have a book published in 1963. At that time, the largest prime
in this form consisted of 23 1's. Have there been found larger
integers consisting of all 1's?


Igor Sheyn

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