Q: What are the prime factors of the number 40,325,600?

 A: 2, 5, 7, 19, 379

Why are those the prime factors of the number 40,325,600?

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 40,325,600

40,325,600
Factor Arrows
220,162,800
Factor Arrows
210,081,400
Factor Arrows
25,040,700
Factor Arrows
22,520,350
Factor Arrows
21,260,175
Factor Arrows
5252,035
Factor Arrows
550,407
Factor Arrows
77,201
Factor Arrows
19379

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, 19, 379

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 7 x 19 x 379 = 40,325,600

This can also be written as 25 x 52 x 71 x 191 x 3791 = 40,325,600

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


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