Q: What are the prime factors of the number 12,305,250?

 A: 2, 3, 5, 1823

Why are those the prime factors of the number 12,305,250?

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 12,305,250

12,305,250
Factor Arrows
26,152,625
Factor Arrows
32,050,875
Factor Arrows
3683,625
Factor Arrows
3227,875
Factor Arrows
545,575
Factor Arrows
59,115
Factor Arrows
51,823

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, 1823

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 5 x 5 x 1,823 = 12,305,250

This can also be written as 21 x 33 x 53 x 1,8231 = 12,305,250

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


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