Q: What are the prime factors of the number 25,154,220?

 A: 2, 3, 5, 7, 13, 17, 271

Why are those the prime factors of the number 25,154,220?

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 25,154,220

25,154,220
Factor Arrows
212,577,110
Factor Arrows
26,288,555
Factor Arrows
32,096,185
Factor Arrows
5419,237
Factor Arrows
759,891
Factor Arrows
134,607
Factor Arrows
17271

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, 7, 13, 17, 271

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 13 x 17 x 271 = 25,154,220

This can also be written as 22 x 31 x 51 x 71 x 131 x 171 x 2711 = 25,154,220

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


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