Q: What are the prime factors of the number 402,404,336?

 A: 2, 373, 67427

Why are those the prime factors of the number 402,404,336?

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 402,404,336

402,404,336
Factor Arrows
2201,202,168
Factor Arrows
2100,601,084
Factor Arrows
250,300,542
Factor Arrows
225,150,271
Factor Arrows
37367,427

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, 373, 67427

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 373 x 67,427 = 402,404,336

This can also be written as 24 x 3731 x 67,4271 = 402,404,336

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


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