Q: What are the prime factors of the number 350,155,520?

 A: 2, 5, 11, 13, 1913

Why are those the prime factors of the number 350,155,520?

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 350,155,520

350,155,520
Factor Arrows
2175,077,760
Factor Arrows
287,538,880
Factor Arrows
243,769,440
Factor Arrows
221,884,720
Factor Arrows
210,942,360
Factor Arrows
25,471,180
Factor Arrows
22,735,590
Factor Arrows
21,367,795
Factor Arrows
5273,559
Factor Arrows
1124,869
Factor Arrows
131,913

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, 11, 13, 1913

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 11 x 13 x 1,913 = 350,155,520

This can also be written as 28 x 51 x 111 x 131 x 1,9131 = 350,155,520

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


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