99997...11111 (40-digits)

This number is a prime.

                                 9999777777 7766555444 3333333322 2111111111

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

+ Greatest integer that consists of exactly the digits (with multiplicity) of the first 22 primes. Not only is this number prime, but also an emirp. [Chandler]

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