Q: What are the prime factors of the number 25,070,740?

 A: 2, 5, 47, 149, 179

Why are those the prime factors of the number 25,070,740?

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 25,070,740

25,070,740
Factor Arrows
212,535,370
Factor Arrows
26,267,685
Factor Arrows
51,253,537
Factor Arrows
4726,671
Factor Arrows
149179

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, 47, 149, 179

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 47 x 149 x 179 = 25,070,740

This can also be written as 22 x 51 x 471 x 1491 x 1791 = 25,070,740

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


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