Q: What are the prime factors of the number 345,455,520?

 A: 2, 3, 5, 719699

Why are those the prime factors of the number 345,455,520?

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 345,455,520

345,455,520
Factor Arrows
2172,727,760
Factor Arrows
286,363,880
Factor Arrows
243,181,940
Factor Arrows
221,590,970
Factor Arrows
210,795,485
Factor Arrows
33,598,495
Factor Arrows
5719,699

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, 5, 719699

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 719,699 = 345,455,520

This can also be written as 25 x 31 x 51 x 719,6991 = 345,455,520

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


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