Q: What are the prime factors of the number 153,002,520?

 A: 2, 3, 5, 11, 53

Why are those the prime factors of the number 153,002,520?

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 153,002,520

153,002,520
Factor Arrows
276,501,260
Factor Arrows
238,250,630
Factor Arrows
219,125,315
Factor Arrows
36,375,105
Factor Arrows
32,125,035
Factor Arrows
3708,345
Factor Arrows
3236,115
Factor Arrows
378,705
Factor Arrows
326,235
Factor Arrows
38,745
Factor Arrows
32,915
Factor Arrows
5583
Factor Arrows
1153

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, 11, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 5 x 11 x 53 = 153,002,520

This can also be written as 23 x 38 x 51 x 111 x 531 = 153,002,520

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


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