Q: What are the prime factors of the number 770,240?

 A: 2, 5, 29, 83

Why are those the prime factors of the number 770,240?

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 770,240

770,240
Factor Arrows
2385,120
Factor Arrows
2192,560
Factor Arrows
296,280
Factor Arrows
248,140
Factor Arrows
224,070
Factor Arrows
212,035
Factor Arrows
52,407
Factor Arrows
2983

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, 29, 83

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 5 x 29 x 83 = 770,240

This can also be written as 26 x 51 x 291 x 831 = 770,240

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


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