Q: What are the prime factors of the number 545,211,120?

 A: 2, 3, 5, 983, 2311

Why are those the prime factors of the number 545,211,120?

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 545,211,120

545,211,120
Factor Arrows
2272,605,560
Factor Arrows
2136,302,780
Factor Arrows
268,151,390
Factor Arrows
234,075,695
Factor Arrows
311,358,565
Factor Arrows
52,271,713
Factor Arrows
9832,311

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, 983, 2311

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 983 x 2,311 = 545,211,120

This can also be written as 24 x 31 x 51 x 9831 x 2,3111 = 545,211,120

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


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