11131...99721 (44-digits)

This number is a prime.

                            1113 1719232931 3741434753 5961677173 7983899721

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This prime also contains a mnemonic trick. It can be read in the following way: the two-digit primes 11, 13, 17,...,97, are 21 in number. [Silva]

Submitted: 2010-06-29 07:27:34;   Last Modified: 2010-12-14 13:27:49.
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