Q: What are the prime factors of the number 545,820?

 A: 2, 3, 5, 11, 827

Why are those the prime factors of the number 545,820?

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 545,820

545,820
Factor Arrows
2272,910
Factor Arrows
2136,455
Factor Arrows
345,485
Factor Arrows
59,097
Factor Arrows
11827

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, 3, 5, 11, 827

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 11 x 827 = 545,820

This can also be written as 22 x 31 x 51 x 111 x 8271 = 545,820

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


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