Q: What are the prime factors of the number 6,418,400?

 A: 2, 5, 71, 113

Why are those the prime factors of the number 6,418,400?

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 6,418,400

6,418,400
Factor Arrows
23,209,200
Factor Arrows
21,604,600
Factor Arrows
2802,300
Factor Arrows
2401,150
Factor Arrows
2200,575
Factor Arrows
540,115
Factor Arrows
58,023
Factor Arrows
71113

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, 5, 71, 113

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 71 x 113 = 6,418,400

This can also be written as 25 x 52 x 711 x 1131 = 6,418,400

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


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