Q: What are the prime factors of the number 75,725,408?

 A: 2, 11, 43, 5003

Why are those the prime factors of the number 75,725,408?

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 75,725,408

75,725,408
Factor Arrows
237,862,704
Factor Arrows
218,931,352
Factor Arrows
29,465,676
Factor Arrows
24,732,838
Factor Arrows
22,366,419
Factor Arrows
11215,129
Factor Arrows
435,003

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, 11, 43, 5003

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 43 x 5,003 = 75,725,408

This can also be written as 25 x 111 x 431 x 5,0031 = 75,725,408

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


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