The book is now available! 4252
(just those submitted by Jevtic)
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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 'Jevtic': (Click here to show all)

+ There are six (a perfect number) ways to insert arithmetic signs between the digits of 4252 that result in a prime: 4^2+5^2, 4-2+5-2, 4+2+5+2, 4+25+2, 4*2+5-2, and 4*2-5+2. [Jevtic]

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