142857 is a cyclic number, the numbers of which always
appear in the same order but rotated around when multiplied by any number
from 1 to 6. 142857 x 2 = 285714 142857 x 3 = 428571 142857 x 4 = 571428
142857 x 5 = 714285 142857 x 6 = 857142 Source: Dave Pigott
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