Q: What are the prime factors of the number 199,476,320?

 A: 2, 5, 31, 131, 307

Why are those the prime factors of the number 199,476,320?

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 199,476,320

199,476,320
Factor Arrows
299,738,160
Factor Arrows
249,869,080
Factor Arrows
224,934,540
Factor Arrows
212,467,270
Factor Arrows
26,233,635
Factor Arrows
51,246,727
Factor Arrows
3140,217
Factor Arrows
131307

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, 5, 31, 131, 307

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 31 x 131 x 307 = 199,476,320

This can also be written as 25 x 51 x 311 x 1311 x 3071 = 199,476,320

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


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