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July 18th, 2013, 23:43
The number 142857

The number 142857 multiplied with 1, 2, 3, 4, 5, 6 results in products, that have all the same six digits in another order:

1 x 142857 = 142857
3 x 142857 = 428571
2 x 142857 = 285714
6 x 142857 = 857142
4 x 142857 = 571428
5 x 142857 = 714285

Rows & columns of the products match, too.

HiddenX, who loves mathematics!

For every complex problem, there is a solution that is simple, neat, and wrong. - HL Mencken
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