Q: What are the prime factors of the number 340,771,648?

 A: 2, 7, 67, 11353

Why are those the prime factors of the number 340,771,648?

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 340,771,648

340,771,648
Factor Arrows
2170,385,824
Factor Arrows
285,192,912
Factor Arrows
242,596,456
Factor Arrows
221,298,228
Factor Arrows
210,649,114
Factor Arrows
25,324,557
Factor Arrows
7760,651
Factor Arrows
6711,353

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, 7, 67, 11353

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 7 x 67 x 11,353 = 340,771,648

This can also be written as 26 x 71 x 671 x 11,3531 = 340,771,648

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


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