The book is now available! 66666...66667 (1204-digits)
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ 6_n 7 is prime for n=1203. Its square, 4_n+1 8_n 9, is an integer of 2408 digits, free of the digits 6 and 7. [Rivera]

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