Q: What are the prime factors of the number 210,321,104?

 A: 2, 7, 431, 4357

Why are those the prime factors of the number 210,321,104?

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 210,321,104

210,321,104
Factor Arrows
2105,160,552
Factor Arrows
252,580,276
Factor Arrows
226,290,138
Factor Arrows
213,145,069
Factor Arrows
71,877,867
Factor Arrows
4314,357

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, 431, 4357

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 431 x 4,357 = 210,321,104

This can also be written as 24 x 71 x 4311 x 4,3571 = 210,321,104

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


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