The book is now available! 77777...37777 (55-digits)
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

                77777 7777773333 3337735555 3773525377 3553773537 7337737777
+
7 7 7 7 7 7 7 7 7 7
7 3 3 3 3 3 3 3 7
7 3 5 5 5 5 3 7
7 3 5 2 5 3 7
7 3 5 5 3 7
7 3 5 3 7
7 3 3 7
7 3 7
7 7
7

A triangle-congruent prime consisting of only prime digits. [Patterson]




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