shine jaffagolly
The longest factor string of 30 is 2 x 3 x 5.
The longest factor string for 9 is 3 x 3.
It can be 2 x 2 x 2 x 3 x 3 x 3. The second longest factor string can be 2x2x2x3x9.
2 x 3 x 5
2 x 2 x 7
3 x 3 x 5
The longest factor string for 42 is when we break down 42 into its prime factors. 42 can be expressed as 2 x 3 x 7. This is the longest factor string because these are the prime numbers that, when multiplied together, result in 42.
2 x 7
3 x 5
2 x 2 x 3 x 3
3 x 3 x 5 x 5
2 x 7 x 11 x 13