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)

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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]

 

  Submitted: 2018-08-18 19:06:34;   Last Modified: 2018-08-18 19:07:23.



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