0.0169
0.3487
0.1469
0.3487
The fraction 531/1523 cannot be reduced any more.
265.5
33.1875
0.3487
1 x 531 = 531 3 x 177 = 531 9 x 59 = 531
531 x 1 = 531 177 x 3 = 531 59 x 9 = 531
It is composite because the sum of the three digits 5,3 and 1(5+3+1) is 9 which is divisible by three. This means that the number itself (531) is also divisible by 3!
33.1875