Q: What are the prime factors of the number 412,661,144?

 A: 2, 7, 1052707

Why are those the prime factors of the number 412,661,144?

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 412,661,144

412,661,144
Factor Arrows
2206,330,572
Factor Arrows
2103,165,286
Factor Arrows
251,582,643
Factor Arrows
77,368,949
Factor Arrows
71,052,707

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, 7, 1052707

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 7 x 1,052,707 = 412,661,144

This can also be written as 23 x 72 x 1,052,7071 = 412,661,144

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


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