Q: What are the prime factors of the number 402,162,200?

 A: 2, 5, 11, 17, 10753

Why are those the prime factors of the number 402,162,200?

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 402,162,200

402,162,200
Factor Arrows
2201,081,100
Factor Arrows
2100,540,550
Factor Arrows
250,270,275
Factor Arrows
510,054,055
Factor Arrows
52,010,811
Factor Arrows
11182,801
Factor Arrows
1710,753

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, 17, 10753

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 11 x 17 x 10,753 = 402,162,200

This can also be written as 23 x 52 x 111 x 171 x 10,7531 = 402,162,200

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


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