Q: What are the prime factors of the number 1,156,000?

 A: 2, 5, 17

Why are those the prime factors of the number 1,156,000?

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 1,156,000

1,156,000
Factor Arrows
2578,000
Factor Arrows
2289,000
Factor Arrows
2144,500
Factor Arrows
272,250
Factor Arrows
236,125
Factor Arrows
57,225
Factor Arrows
51,445
Factor Arrows
5289
Factor Arrows
1717

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, 17

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 17 x 17 = 1,156,000

This can also be written as 25 x 53 x 172 = 1,156,000

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


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