The book is now available! 113
(just those submitted by Silva)
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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 'Silva': (Click here to show all)

+ The smallest prime that yields another if the sum of digits of its consecutive digits is sandwiched between each of the corresponding consecutive digits (i.e., 113 becomes 12143). [Silva]

+ The smallest prime whose number of digits and sum of digits are twin primes. [Silva]




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