Q: What are the prime factors of the number 43,251,120?

 A: 2, 3, 5, 11, 43, 127

Why are those the prime factors of the number 43,251,120?

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 43,251,120

43,251,120
Factor Arrows
221,625,560
Factor Arrows
210,812,780
Factor Arrows
25,406,390
Factor Arrows
22,703,195
Factor Arrows
3901,065
Factor Arrows
3300,355
Factor Arrows
560,071
Factor Arrows
115,461
Factor Arrows
43127

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, 43, 127

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 5 x 11 x 43 x 127 = 43,251,120

This can also be written as 24 x 32 x 51 x 111 x 431 x 1271 = 43,251,120

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


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