Q: What are the prime factors of the number 74,767,455?

 A: 3, 5, 7, 59, 149

Why are those the prime factors of the number 74,767,455?

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 74,767,455

74,767,455
Factor Arrows
324,922,485
Factor Arrows
38,307,495
Factor Arrows
32,769,165
Factor Arrows
3923,055
Factor Arrows
3307,685
Factor Arrows
561,537
Factor Arrows
78,791
Factor Arrows
59149

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:

3, 5, 7, 59, 149

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 5 x 7 x 59 x 149 = 74,767,455

This can also be written as 35 x 51 x 71 x 591 x 1491 = 74,767,455

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


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