1355297

This number is a prime.

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1355297 = 1*11*111*1111 - (1 + 11 + 111 + 1111). Note that 1355297 is the only known prime of this form, and the next such prime (if it exists) has more than 72000 digits! [Firoozbakht]

Submitted: 2009-04-04 10:05:27;   Last Modified: 2009-04-04 19:44:10.
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