Q: What are the prime factors of the number 423,366,216?

 A: 2, 3, 7, 13, 149, 1301

Why are those the prime factors of the number 423,366,216?

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 423,366,216

423,366,216
Factor Arrows
2211,683,108
Factor Arrows
2105,841,554
Factor Arrows
252,920,777
Factor Arrows
317,640,259
Factor Arrows
72,520,037
Factor Arrows
13193,849
Factor Arrows
1491,301

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, 3, 7, 13, 149, 1301

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 13 x 149 x 1,301 = 423,366,216

This can also be written as 23 x 31 x 71 x 131 x 1491 x 1,3011 = 423,366,216

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


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