Q: What are the prime factors of the number 199,168,866?

 A: 2, 3, 13, 233, 281

Why are those the prime factors of the number 199,168,866?

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 199,168,866

199,168,866
Factor Arrows
299,584,433
Factor Arrows
333,194,811
Factor Arrows
311,064,937
Factor Arrows
13851,149
Factor Arrows
1365,473
Factor Arrows
233281

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, 13, 233, 281

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 13 x 13 x 233 x 281 = 199,168,866

This can also be written as 21 x 32 x 132 x 2331 x 2811 = 199,168,866

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


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