The book is now available! 121
(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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121, 143, 169, and 187 are the first and possibly only four consecutive brilliant numbers whose reverses are also brilliant numbers. [Gaydos]


  Submitted: 2019-01-30 21:34:01;   Last Modified: 2019-01-31 06:53:43.

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