Q: What are the prime factors of the number 221,025,300?

 A: 2, 3, 5, 701, 1051

Why are those the prime factors of the number 221,025,300?

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 221,025,300

221,025,300
Factor Arrows
2110,512,650
Factor Arrows
255,256,325
Factor Arrows
318,418,775
Factor Arrows
53,683,755
Factor Arrows
5736,751
Factor Arrows
7011,051

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, 701, 1051

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 701 x 1,051 = 221,025,300

This can also be written as 22 x 31 x 52 x 7011 x 1,0511 = 221,025,300

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


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