Q: What are the prime factors of the number 7,525,440?

 A: 2, 3, 5, 13, 67

Why are those the prime factors of the number 7,525,440?

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 7,525,440

7,525,440
Factor Arrows
23,762,720
Factor Arrows
21,881,360
Factor Arrows
2940,680
Factor Arrows
2470,340
Factor Arrows
2235,170
Factor Arrows
2117,585
Factor Arrows
339,195
Factor Arrows
313,065
Factor Arrows
34,355
Factor Arrows
5871
Factor Arrows
1367

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, 5, 13, 67

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 3 x 3 x 3 x 5 x 13 x 67 = 7,525,440

This can also be written as 26 x 33 x 51 x 131 x 671 = 7,525,440

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


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