The book is now available! 1242
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ 1242 = 1/2(sigma(1242)-phi(1242)). It is interesting that all numbers less than 1242 with this property are 12 & 42. [Firoozbakht]

(There are 3 curios for this number that have not yet been approved by an editor.)




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