The book is now available! 8987
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ The only 2-sphenic number concatenated in reverse order from two successive odd numbers, i.e., 8987=11*19*43. Note that the concatenation in reverse order of these factors, i.e., 431911 is prime. [Loungrides]

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