Q: What are the prime factors of the number 198,888,360?

 A: 2, 3, 5, 11, 23, 6551

Why are those the prime factors of the number 198,888,360?

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 198,888,360

198,888,360
Factor Arrows
299,444,180
Factor Arrows
249,722,090
Factor Arrows
224,861,045
Factor Arrows
38,287,015
Factor Arrows
51,657,403
Factor Arrows
11150,673
Factor Arrows
236,551

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, 5, 11, 23, 6551

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 11 x 23 x 6,551 = 198,888,360

This can also be written as 23 x 31 x 51 x 111 x 231 x 6,5511 = 198,888,360

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


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