The book is now available! 6700417
(just those submitted by Dobb)
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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 'Dobb': (Click here to show all)

+ 6700417 is a prime co-factor (with 641) of 2^(2^5)+1 or the Fermat number F5. This was the first Fermat number shown to be composite, which was discovered by Leonhard Euler in 1732, less than 100 years after Pierre Fermat claimed that he believed all numbers of the type [2^(2^n)+1] were prime. [Dobb]




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