Q: What are the prime factors of the number 423,341,235?

 A: 3, 5, 37, 43, 73

Why are those the prime factors of the number 423,341,235?

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 423,341,235

423,341,235
Factor Arrows
3141,113,745
Factor Arrows
347,037,915
Factor Arrows
315,679,305
Factor Arrows
35,226,435
Factor Arrows
31,742,145
Factor Arrows
3580,715
Factor Arrows
5116,143
Factor Arrows
373,139
Factor Arrows
4373

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:

3, 5, 37, 43, 73

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 5 x 37 x 43 x 73 = 423,341,235

This can also be written as 36 x 51 x 371 x 431 x 731 = 423,341,235

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


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