Q: What are the prime factors of the number 665,457,624?

 A: 2, 3, 13, 710959

Why are those the prime factors of the number 665,457,624?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 665,457,624

665,457,624
Factor Arrows
2332,728,812
Factor Arrows
2166,364,406
Factor Arrows
283,182,203
Factor Arrows
327,727,401
Factor Arrows
39,242,467
Factor Arrows
13710,959

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 13, 710959

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 13 x 710,959 = 665,457,624

This can also be written as 23 x 32 x 131 x 710,9591 = 665,457,624

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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