Q: What are the prime factors of the number 423,443,104?

 A: 2, 7, 173, 223

Why are those the prime factors of the number 423,443,104?

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 423,443,104

423,443,104
Factor Arrows
2211,721,552
Factor Arrows
2105,860,776
Factor Arrows
252,930,388
Factor Arrows
226,465,194
Factor Arrows
213,232,597
Factor Arrows
71,890,371
Factor Arrows
7270,053
Factor Arrows
738,579
Factor Arrows
173223

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, 173, 223

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 7 x 7 x 173 x 223 = 423,443,104

This can also be written as 25 x 73 x 1731 x 2231 = 423,443,104

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


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