Q: What are the prime factors of the number 27,628,900?

 A: 2, 5, 13, 53, 401

Why are those the prime factors of the number 27,628,900?

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 27,628,900

27,628,900
Factor Arrows
213,814,450
Factor Arrows
26,907,225
Factor Arrows
51,381,445
Factor Arrows
5276,289
Factor Arrows
1321,253
Factor Arrows
53401

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, 13, 53, 401

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 13 x 53 x 401 = 27,628,900

This can also be written as 22 x 52 x 131 x 531 x 4011 = 27,628,900

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


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