There are three prime numbers a, B and C. the reciprocal sum of these three prime numbers is 31 / 1001. What are the three reciprocal numbers?

There are three prime numbers a, B and C. the reciprocal sum of these three prime numbers is 31 / 1001. What are the three reciprocal numbers?

1001=7×11×13
So these three numbers can only be 7, 11, 13
7 + 11 + 13 = 31
So it's 7, 11, 13