Q: What are the prime factors of the number 74,284,000?

 A: 2, 5, 7, 379

Why are those the prime factors of the number 74,284,000?

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 74,284,000

74,284,000
Factor Arrows
237,142,000
Factor Arrows
218,571,000
Factor Arrows
29,285,500
Factor Arrows
24,642,750
Factor Arrows
22,321,375
Factor Arrows
5464,275
Factor Arrows
592,855
Factor Arrows
518,571
Factor Arrows
72,653
Factor Arrows
7379

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, 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 5 x 7 x 7 x 379 = 74,284,000

This can also be written as 25 x 53 x 72 x 3791 = 74,284,000

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


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