Q: What are the prime factors of the number 18,830,000?

 A: 2, 5, 7, 269

Why are those the prime factors of the number 18,830,000?

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 18,830,000

18,830,000
Factor Arrows
29,415,000
Factor Arrows
24,707,500
Factor Arrows
22,353,750
Factor Arrows
21,176,875
Factor Arrows
5235,375
Factor Arrows
547,075
Factor Arrows
59,415
Factor Arrows
51,883
Factor Arrows
7269

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, 269

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 5 x 5 x 7 x 269 = 18,830,000

This can also be written as 24 x 54 x 71 x 2691 = 18,830,000

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


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