The book is now available! 197137
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ 197137=444^2+1 is the only prime of form n^2+1 concatenated in two ways, i.e., from three double-digit primes, (19, 71, 37), or two 3-digit primes (197, 137). [Loungrides]

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