Q: What are the prime factors of the number 403,630,208?

 A: 2, 3153361

Why are those the prime factors of the number 403,630,208?

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 403,630,208

403,630,208
Factor Arrows
2201,815,104
Factor Arrows
2100,907,552
Factor Arrows
250,453,776
Factor Arrows
225,226,888
Factor Arrows
212,613,444
Factor Arrows
26,306,722
Factor Arrows
23,153,361

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, 3153361

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3,153,361 = 403,630,208

This can also be written as 27 x 3,153,3611 = 403,630,208

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


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