Q: What are the prime factors of the number 7,397,120?

 A: 2, 5, 5779

Why are those the prime factors of the number 7,397,120?

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 7,397,120

7,397,120
Factor Arrows
23,698,560
Factor Arrows
21,849,280
Factor Arrows
2924,640
Factor Arrows
2462,320
Factor Arrows
2231,160
Factor Arrows
2115,580
Factor Arrows
257,790
Factor Arrows
228,895
Factor Arrows
55,779

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, 5779

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 5,779 = 7,397,120

This can also be written as 28 x 51 x 5,7791 = 7,397,120

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


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