Q: What are the prime factors of the number 313,042,176?

 A: 2, 3, 19, 7151

Why are those the prime factors of the number 313,042,176?

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 313,042,176

313,042,176
Factor Arrows
2156,521,088
Factor Arrows
278,260,544
Factor Arrows
239,130,272
Factor Arrows
219,565,136
Factor Arrows
29,782,568
Factor Arrows
24,891,284
Factor Arrows
22,445,642
Factor Arrows
21,222,821
Factor Arrows
3407,607
Factor Arrows
3135,869
Factor Arrows
197,151

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, 19, 7151

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 3 x 3 x 19 x 7,151 = 313,042,176

This can also be written as 28 x 32 x 191 x 7,1511 = 313,042,176

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


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