Q: What are the prime factors of the number 5,557,248?

 A: 2, 3, 67

Why are those the prime factors of the number 5,557,248?

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 5,557,248

5,557,248
Factor Arrows
22,778,624
Factor Arrows
21,389,312
Factor Arrows
2694,656
Factor Arrows
2347,328
Factor Arrows
2173,664
Factor Arrows
286,832
Factor Arrows
243,416
Factor Arrows
221,708
Factor Arrows
210,854
Factor Arrows
25,427
Factor Arrows
31,809
Factor Arrows
3603
Factor Arrows
3201
Factor Arrows
367

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, 67

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 3 x 3 x 3 x 67 = 5,557,248

This can also be written as 210 x 34 x 671 = 5,557,248

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


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