Q: What are the prime factors of the number 75,623,240?

 A: 2, 5, 7, 11, 43, 571

Why are those the prime factors of the number 75,623,240?

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 75,623,240

75,623,240
Factor Arrows
237,811,620
Factor Arrows
218,905,810
Factor Arrows
29,452,905
Factor Arrows
51,890,581
Factor Arrows
7270,083
Factor Arrows
1124,553
Factor Arrows
43571

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, 7, 11, 43, 571

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 11 x 43 x 571 = 75,623,240

This can also be written as 23 x 51 x 71 x 111 x 431 x 5711 = 75,623,240

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


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