The book is now available! 95861...78973 (39-digits)
(just those submitted by Gupta)
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                                  958619577 8359471439 3831931415 1899378973

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

+ Omit the rightmost digit from this prime and the remaining number is the largest right-truncatable semiprime. [Gupta and Honaker]

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