Q: What are the prime factors of the number 7,099,200?

 A: 2, 3, 5, 17, 29

Why are those the prime factors of the number 7,099,200?

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 7,099,200

7,099,200
Factor Arrows
23,549,600
Factor Arrows
21,774,800
Factor Arrows
2887,400
Factor Arrows
2443,700
Factor Arrows
2221,850
Factor Arrows
2110,925
Factor Arrows
336,975
Factor Arrows
312,325
Factor Arrows
52,465
Factor Arrows
5493
Factor Arrows
1729

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, 17, 29

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 3 x 3 x 5 x 5 x 17 x 29 = 7,099,200

This can also be written as 26 x 32 x 52 x 171 x 291 = 7,099,200

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


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