Question

Why 142857 is a special number ?​

Answer 1

Answer:

142857 is a special number because :

142857, the six repeating digits of 17, 0. 142857, is the best-known cyclic number in base 10. If it is multiplied by 2, 3, 4, 5, or 6, the answer will be a cyclic permutation of itself, and will correspond to the repeating digits of 27, 37, 47, 57, or 67 respectively.

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Answer 2

Answer:

It is the best known cyclic number