The book is now available! 7853
(another Prime Pages' Curiosity)
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+ 7853 is the largest prime factor of the number written with three ones: 11! - 1 = 13 * 17 * 23 * 7853. [Post]

+ The largest 4-digit prime made up from the complementary digits of the smallest distinct-prime-digit emirp, 3257. [Loungrides]




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