Q: What are the prime factors of the number 346,243,653?

 A: 3, 7, 359

Why are those the prime factors of the number 346,243,653?

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 346,243,653

346,243,653
Factor Arrows
3115,414,551
Factor Arrows
338,471,517
Factor Arrows
312,823,839
Factor Arrows
34,274,613
Factor Arrows
31,424,871
Factor Arrows
3474,957
Factor Arrows
3158,319
Factor Arrows
352,773
Factor Arrows
317,591
Factor Arrows
72,513
Factor Arrows
7359

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:

3, 7, 359

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 7 x 7 x 359 = 346,243,653

This can also be written as 39 x 72 x 3591 = 346,243,653

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


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