Q: What are the prime factors of the number 196,442,100?

 A: 2, 3, 5, 167, 1307

Why are those the prime factors of the number 196,442,100?

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 196,442,100

196,442,100
Factor Arrows
298,221,050
Factor Arrows
249,110,525
Factor Arrows
316,370,175
Factor Arrows
35,456,725
Factor Arrows
51,091,345
Factor Arrows
5218,269
Factor Arrows
1671,307

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, 167, 1307

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 5 x 167 x 1,307 = 196,442,100

This can also be written as 22 x 32 x 52 x 1671 x 1,3071 = 196,442,100

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


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