The book is now available! 93
(another Prime Pages' Curiosity)
Prime Curios!
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+ The first 93 digits of 93! form a prime number. [Vrba]

+ The exact number of 5-digit palindromic primes. [Patterson]

+ (93!/39!)+1 is prime. [Patterson]

+ The least positive integer that produces exactly 93 primes in a Collatz trajectory has never been found.

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