The book is now available! 649
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ The smallest brilliant number that contains all three brilliant digits. [Gaydos]

+ The smallest 3-digit brilliant number formed from the concatenation of composite digits. Note that its prime factors, (11, 59), create another brilliant number, 1159=19*61, whose prime factors create a third brilliant number, i.e., 649=11*59, 1159=19*61, 1961=37*53. So, 649 is an "extra-brilliant number." [Loungrides]

(There is one curio for this number that has not yet been approved by an editor.)

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