Q: What are the prime factors of the number 400,301,436?

 A: 2, 3, 1613, 20681

Why are those the prime factors of the number 400,301,436?

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 400,301,436

400,301,436
Factor Arrows
2200,150,718
Factor Arrows
2100,075,359
Factor Arrows
333,358,453
Factor Arrows
1,61320,681

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, 1613, 20681

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 1,613 x 20,681 = 400,301,436

This can also be written as 22 x 31 x 1,6131 x 20,6811 = 400,301,436

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


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