Q: What are the prime factors of the number 198,769,312?

 A: 2, 7, 23, 41, 941

Why are those the prime factors of the number 198,769,312?

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 198,769,312

198,769,312
Factor Arrows
299,384,656
Factor Arrows
249,692,328
Factor Arrows
224,846,164
Factor Arrows
212,423,082
Factor Arrows
26,211,541
Factor Arrows
7887,363
Factor Arrows
2338,581
Factor Arrows
41941

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, 23, 41, 941

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 23 x 41 x 941 = 198,769,312

This can also be written as 25 x 71 x 231 x 411 x 9411 = 198,769,312

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


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