Q: What are the prime factors of the number 404,316,880?

 A: 2, 5, 11, 31, 14821

Why are those the prime factors of the number 404,316,880?

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 404,316,880

404,316,880
Factor Arrows
2202,158,440
Factor Arrows
2101,079,220
Factor Arrows
250,539,610
Factor Arrows
225,269,805
Factor Arrows
55,053,961
Factor Arrows
11459,451
Factor Arrows
3114,821

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, 11, 31, 14821

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 11 x 31 x 14,821 = 404,316,880

This can also be written as 24 x 51 x 111 x 311 x 14,8211 = 404,316,880

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


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