The book is now available! 181811881
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ Emirp formed by the concatenation in order of all three-digit primes containing 1 and 8. If we replace the 8s (2^3) with 2, 3, 2*3 and 3^2 it will yield 4 more primes. The same also works with 2*3*6*8*9. Curiously 1818118810188118181 is prime too. [Petrov]




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