Q: What are the prime factors of the number 75,447,330?

 A: 2, 3, 5, 7, 443, 811

Why are those the prime factors of the number 75,447,330?

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 75,447,330

75,447,330
Factor Arrows
237,723,665
Factor Arrows
312,574,555
Factor Arrows
52,514,911
Factor Arrows
7359,273
Factor Arrows
443811

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, 7, 443, 811

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 7 x 443 x 811 = 75,447,330

This can also be written as 21 x 31 x 51 x 71 x 4431 x 8111 = 75,447,330

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


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