Q: What are the prime factors of the number 345,133,664?

 A: 2, 31, 139, 2503

Why are those the prime factors of the number 345,133,664?

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 345,133,664

345,133,664
Factor Arrows
2172,566,832
Factor Arrows
286,283,416
Factor Arrows
243,141,708
Factor Arrows
221,570,854
Factor Arrows
210,785,427
Factor Arrows
31347,917
Factor Arrows
1392,503

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, 31, 139, 2503

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 31 x 139 x 2,503 = 345,133,664

This can also be written as 25 x 311 x 1391 x 2,5031 = 345,133,664

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


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