Q: What are the prime factors of the number 40,301,625?

 A: 3, 5, 7, 13, 1181

Why are those the prime factors of the number 40,301,625?

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 40,301,625

40,301,625
Factor Arrows
313,433,875
Factor Arrows
52,686,775
Factor Arrows
5537,355
Factor Arrows
5107,471
Factor Arrows
715,353
Factor Arrows
131,181

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, 13, 1181

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 7 x 13 x 1,181 = 40,301,625

This can also be written as 31 x 53 x 71 x 131 x 1,1811 = 40,301,625

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


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