Q: What are the prime factors of the number 404,703,760?

 A: 2, 5, 31, 53, 3079

Why are those the prime factors of the number 404,703,760?

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 404,703,760

404,703,760
Factor Arrows
2202,351,880
Factor Arrows
2101,175,940
Factor Arrows
250,587,970
Factor Arrows
225,293,985
Factor Arrows
55,058,797
Factor Arrows
31163,187
Factor Arrows
533,079

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, 31, 53, 3079

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 31 x 53 x 3,079 = 404,703,760

This can also be written as 24 x 51 x 311 x 531 x 3,0791 = 404,703,760

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


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