Q: What are the prime factors of the number 39,982,176?

 A: 2, 3, 13, 59, 181

Why are those the prime factors of the number 39,982,176?

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 39,982,176

39,982,176
Factor Arrows
219,991,088
Factor Arrows
29,995,544
Factor Arrows
24,997,772
Factor Arrows
22,498,886
Factor Arrows
21,249,443
Factor Arrows
3416,481
Factor Arrows
3138,827
Factor Arrows
1310,679
Factor Arrows
59181

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, 13, 59, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 13 x 59 x 181 = 39,982,176

This can also be written as 25 x 32 x 131 x 591 x 1811 = 39,982,176

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


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