Q: What are the prime factors of the number 345,303,552?

 A: 2, 3, 11, 107, 191

Why are those the prime factors of the number 345,303,552?

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 345,303,552

345,303,552
Factor Arrows
2172,651,776
Factor Arrows
286,325,888
Factor Arrows
243,162,944
Factor Arrows
221,581,472
Factor Arrows
210,790,736
Factor Arrows
25,395,368
Factor Arrows
22,697,684
Factor Arrows
21,348,842
Factor Arrows
2674,421
Factor Arrows
3224,807
Factor Arrows
1120,437
Factor Arrows
107191

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, 11, 107, 191

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 2 x 2 x 2 x 3 x 11 x 107 x 191 = 345,303,552

This can also be written as 29 x 31 x 111 x 1071 x 1911 = 345,303,552

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


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