Changes

The number ''142857'' has the curious property that, if it is multiplied by any number from 1 to 6, the result is a number with the same digits in the same order (a cyclic permutation).  

The number ''142857'' has the curious property that, if it is multiplied by any number from 1 to 6, the result is a number with the same digits in the same order (a [[cyclic permutation]]).  

For example, 142857 × 3 = 428571.

For example, 142857 × 3 = 428571.

:1/7 = 142857/999999

:1/7 = 142857/999999

and that 1/7 expressed as a decimal is

and that 1/7 expressed as a [[decimal]] is

:0.142857142857142857142857142857...

:0.142857142857142857142857142857...

Investigating the number 142857 can lead a student into an understanding of repeating decimals and rational numbers.

Investigating the number 142857 can lead a student into an understanding of repeating decimals and [[rational numbers]].

[[Category:Mathematics]]

[[Category:Mathematics]]