Q: What are the prime factors of the number 2,196,480?

 A: 2, 3, 5, 11, 13

Why are those the prime factors of the number 2,196,480?

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 2,196,480

2,196,480
Factor Arrows
21,098,240
Factor Arrows
2549,120
Factor Arrows
2274,560
Factor Arrows
2137,280
Factor Arrows
268,640
Factor Arrows
234,320
Factor Arrows
217,160
Factor Arrows
28,580
Factor Arrows
24,290
Factor Arrows
22,145
Factor Arrows
3715
Factor Arrows
5143
Factor Arrows
1113

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, 13

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 11 x 13 = 2,196,480

This can also be written as 210 x 31 x 51 x 111 x 131 = 2,196,480

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


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