Q: What are the prime factors of the number 45,544,140?

 A: 2, 3, 5, 19, 23, 193

Why are those the prime factors of the number 45,544,140?

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 45,544,140

45,544,140
Factor Arrows
222,772,070
Factor Arrows
211,386,035
Factor Arrows
33,795,345
Factor Arrows
31,265,115
Factor Arrows
3421,705
Factor Arrows
584,341
Factor Arrows
194,439
Factor Arrows
23193

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, 19, 23, 193

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 19 x 23 x 193 = 45,544,140

This can also be written as 22 x 33 x 51 x 191 x 231 x 1931 = 45,544,140

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


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