Q: What are the prime factors of the number 7,751,400?

 A: 2, 3, 5, 12919

Why are those the prime factors of the number 7,751,400?

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 7,751,400

7,751,400
Factor Arrows
23,875,700
Factor Arrows
21,937,850
Factor Arrows
2968,925
Factor Arrows
3322,975
Factor Arrows
564,595
Factor Arrows
512,919

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, 12919

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 12,919 = 7,751,400

This can also be written as 23 x 31 x 52 x 12,9191 = 7,751,400

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


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