Q: What are the prime factors of the number 2,649,600?

 A: 2, 3, 5, 23

Why are those the prime factors of the number 2,649,600?

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 2,649,600

2,649,600
Factor Arrows
21,324,800
Factor Arrows
2662,400
Factor Arrows
2331,200
Factor Arrows
2165,600
Factor Arrows
282,800
Factor Arrows
241,400
Factor Arrows
220,700
Factor Arrows
210,350
Factor Arrows
25,175
Factor Arrows
31,725
Factor Arrows
3575
Factor Arrows
5115
Factor Arrows
523

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, 23

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 3 x 3 x 5 x 5 x 23 = 2,649,600

This can also be written as 29 x 32 x 52 x 231 = 2,649,600

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


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