Q: What are the prime factors of the number 402,452,512?

 A: 2, 7, 11, 233, 701

Why are those the prime factors of the number 402,452,512?

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 402,452,512

402,452,512
Factor Arrows
2201,226,256
Factor Arrows
2100,613,128
Factor Arrows
250,306,564
Factor Arrows
225,153,282
Factor Arrows
212,576,641
Factor Arrows
71,796,663
Factor Arrows
11163,333
Factor Arrows
233701

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, 7, 11, 233, 701

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 11 x 233 x 701 = 402,452,512

This can also be written as 25 x 71 x 111 x 2331 x 7011 = 402,452,512

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


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