Q: What are the prime factors of the number 175,147,776?

 A: 2, 3, 19, 4001

Why are those the prime factors of the number 175,147,776?

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 175,147,776

175,147,776
Factor Arrows
287,573,888
Factor Arrows
243,786,944
Factor Arrows
221,893,472
Factor Arrows
210,946,736
Factor Arrows
25,473,368
Factor Arrows
22,736,684
Factor Arrows
21,368,342
Factor Arrows
2684,171
Factor Arrows
3228,057
Factor Arrows
376,019
Factor Arrows
194,001

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, 4001

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 4,001 = 175,147,776

This can also be written as 28 x 32 x 191 x 4,0011 = 175,147,776

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


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