Q: What are the prime factors of the number 755,140?

 A: 2, 5, 17, 2221

Why are those the prime factors of the number 755,140?

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 755,140

755,140
Factor Arrows
2377,570
Factor Arrows
2188,785
Factor Arrows
537,757
Factor Arrows
172,221

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, 17, 2221

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 17 x 2,221 = 755,140

This can also be written as 22 x 51 x 171 x 2,2211 = 755,140

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


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