Q: What are the prime factors of the number 402,433,044?

 A: 2, 3, 13, 17, 43, 3529

Why are those the prime factors of the number 402,433,044?

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 402,433,044

402,433,044
Factor Arrows
2201,216,522
Factor Arrows
2100,608,261
Factor Arrows
333,536,087
Factor Arrows
132,579,699
Factor Arrows
17151,747
Factor Arrows
433,529

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, 17, 43, 3529

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 13 x 17 x 43 x 3,529 = 402,433,044

This can also be written as 22 x 31 x 131 x 171 x 431 x 3,5291 = 402,433,044

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


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