Q: What are the prime factors of the number 735,640?

 A: 2, 5, 53, 347

Why are those the prime factors of the number 735,640?

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 735,640

735,640
Factor Arrows
2367,820
Factor Arrows
2183,910
Factor Arrows
291,955
Factor Arrows
518,391
Factor Arrows
53347

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, 5, 53, 347

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 53 x 347 = 735,640

This can also be written as 23 x 51 x 531 x 3471 = 735,640

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


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