Q: What are the prime factors of the number 791,154?

 A: 2, 3, 7, 13, 23

Why are those the prime factors of the number 791,154?

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 791,154

791,154
Factor Arrows
2395,577
Factor Arrows
3131,859
Factor Arrows
343,953
Factor Arrows
314,651
Factor Arrows
72,093
Factor Arrows
7299
Factor Arrows
1323

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, 7, 13, 23

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 7 x 7 x 13 x 23 = 791,154

This can also be written as 21 x 33 x 72 x 131 x 231 = 791,154

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


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