Q: What are the prime factors of the number 12,773,600?

 A: 2, 5, 7, 2281

Why are those the prime factors of the number 12,773,600?

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 12,773,600

12,773,600
Factor Arrows
26,386,800
Factor Arrows
23,193,400
Factor Arrows
21,596,700
Factor Arrows
2798,350
Factor Arrows
2399,175
Factor Arrows
579,835
Factor Arrows
515,967
Factor Arrows
72,281

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, 2281

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 7 x 2,281 = 12,773,600

This can also be written as 25 x 52 x 71 x 2,2811 = 12,773,600

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


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