Q: What are the prime factors of the number 43,315,744?

 A: 2, 19, 191, 373

Why are those the prime factors of the number 43,315,744?

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 43,315,744

43,315,744
Factor Arrows
221,657,872
Factor Arrows
210,828,936
Factor Arrows
25,414,468
Factor Arrows
22,707,234
Factor Arrows
21,353,617
Factor Arrows
1971,243
Factor Arrows
191373

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, 19, 191, 373

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 19 x 191 x 373 = 43,315,744

This can also be written as 25 x 191 x 1911 x 3731 = 43,315,744

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


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