Q: What are the prime factors of the number 345,151,368?

 A: 2, 3, 43, 4129

Why are those the prime factors of the number 345,151,368?

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 345,151,368

345,151,368
Factor Arrows
2172,575,684
Factor Arrows
286,287,842
Factor Arrows
243,143,921
Factor Arrows
314,381,307
Factor Arrows
34,793,769
Factor Arrows
31,597,923
Factor Arrows
3532,641
Factor Arrows
3177,547
Factor Arrows
434,129

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, 43, 4129

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 43 x 4,129 = 345,151,368

This can also be written as 23 x 35 x 431 x 4,1291 = 345,151,368

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


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