Q: What are the prime factors of the number 243,044,376?

 A: 2, 3, 17, 67, 523

Why are those the prime factors of the number 243,044,376?

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 243,044,376

243,044,376
Factor Arrows
2121,522,188
Factor Arrows
260,761,094
Factor Arrows
230,380,547
Factor Arrows
310,126,849
Factor Arrows
17595,697
Factor Arrows
1735,041
Factor Arrows
67523

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, 17, 67, 523

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 17 x 17 x 67 x 523 = 243,044,376

This can also be written as 23 x 31 x 172 x 671 x 5231 = 243,044,376

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


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