Q: What are the prime factors of the number 2,573,480?

 A: 2, 5, 7, 13, 101

Why are those the prime factors of the number 2,573,480?

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 2,573,480

2,573,480
Factor Arrows
21,286,740
Factor Arrows
2643,370
Factor Arrows
2321,685
Factor Arrows
564,337
Factor Arrows
79,191
Factor Arrows
71,313
Factor Arrows
13101

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, 7, 13, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 7 x 13 x 101 = 2,573,480

This can also be written as 23 x 51 x 72 x 131 x 1011 = 2,573,480

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


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