The book is now available! 32099
(just those submitted by Firoozbakht)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

Just showing those entries submitted by 'Firoozbakht': (Click here to show all)

+ 32099 = 1^sigma(1) + 2^sigma(2)+ 3^sigma(3) + 4^sigma(4) + 5^sigma(5). It is the only known such number and next such prime (if it exists) has more than 20000 digits. [Firoozbakht]

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