Q: What are the prime factors of the number 401,065,444?

 A: 2, 13, 23, 41, 8179

Why are those the prime factors of the number 401,065,444?

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 401,065,444

401,065,444
Factor Arrows
2200,532,722
Factor Arrows
2100,266,361
Factor Arrows
137,712,797
Factor Arrows
23335,339
Factor Arrows
418,179

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, 13, 23, 41, 8179

We can check our work by multiplying all of the prime factors together: 2 x 2 x 13 x 23 x 41 x 8,179 = 401,065,444

This can also be written as 22 x 131 x 231 x 411 x 8,1791 = 401,065,444

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


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