Q: What are the prime factors of the number 25,026,040?

 A: 2, 5, 13, 17, 19, 149

Why are those the prime factors of the number 25,026,040?

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 25,026,040

25,026,040
Factor Arrows
212,513,020
Factor Arrows
26,256,510
Factor Arrows
23,128,255
Factor Arrows
5625,651
Factor Arrows
1348,127
Factor Arrows
172,831
Factor Arrows
19149

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, 13, 17, 19, 149

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 13 x 17 x 19 x 149 = 25,026,040

This can also be written as 23 x 51 x 131 x 171 x 191 x 1491 = 25,026,040

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


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