42857...57143 (68-digits)

This number is a prime.

42857142 8571428571 4285714285 7142857142 8571428571 4285714285 7142857143

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The prime number ((3 x 10⁶⁸) + 1)/7 contains the first 68 digits of the decimal expansion of 3/7 rounded up. [Glenn]

Submitted: 2001-06-07 16:11:42; Last Modified: 2008-01-30 17:28:00.