Q: What are the prime factors of the number 74,308,380?

 A: 2, 3, 5, 1021, 1213

Why are those the prime factors of the number 74,308,380?

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 74,308,380

74,308,380
Factor Arrows
237,154,190
Factor Arrows
218,577,095
Factor Arrows
36,192,365
Factor Arrows
51,238,473
Factor Arrows
1,0211,213

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, 3, 5, 1021, 1213

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 1,021 x 1,213 = 74,308,380

This can also be written as 22 x 31 x 51 x 1,0211 x 1,2131 = 74,308,380

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


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