Q: What are the prime factors of the number 1,385,000?

 A: 2, 5, 277

Why are those the prime factors of the number 1,385,000?

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 1,385,000

1,385,000
Factor Arrows
2692,500
Factor Arrows
2346,250
Factor Arrows
2173,125
Factor Arrows
534,625
Factor Arrows
56,925
Factor Arrows
51,385
Factor Arrows
5277

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, 277

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 5 x 5 x 277 = 1,385,000

This can also be written as 23 x 54 x 2771 = 1,385,000

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


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