The book is now available! 191
(just those submitted by Honaker)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

Just showing those entries submitted by 'Honaker': (Click here to show all)

+ The lesser in the largest known twin prime pair of the form n*2^(n-1) +/- 1. [Honaker]

+ Question: What is the only prime whose square has five different digits that contain an even square digit in the middle with the first and last pairs being squares as well? Answer: 191. [Friend and Honaker]

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