Q: What are the prime factors of the number 324,410,400?

 A: 2, 3, 5, 23, 653

Why are those the prime factors of the number 324,410,400?

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 324,410,400

324,410,400
Factor Arrows
2162,205,200
Factor Arrows
281,102,600
Factor Arrows
240,551,300
Factor Arrows
220,275,650
Factor Arrows
210,137,825
Factor Arrows
33,379,275
Factor Arrows
31,126,425
Factor Arrows
3375,475
Factor Arrows
575,095
Factor Arrows
515,019
Factor Arrows
23653

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, 653

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 5 x 23 x 653 = 324,410,400

This can also be written as 25 x 33 x 52 x 231 x 6531 = 324,410,400

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


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