Q: What are the prime factors of the number 38,319,040?

 A: 2, 5, 119747

Why are those the prime factors of the number 38,319,040?

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 38,319,040

38,319,040
Factor Arrows
219,159,520
Factor Arrows
29,579,760
Factor Arrows
24,789,880
Factor Arrows
22,394,940
Factor Arrows
21,197,470
Factor Arrows
2598,735
Factor Arrows
5119,747

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, 5, 119747

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 119,747 = 38,319,040

This can also be written as 26 x 51 x 119,7471 = 38,319,040

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


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