Q: What are the prime factors of the number 12,364,478?

 A: 2, 7, 19, 23, 43, 47

Why are those the prime factors of the number 12,364,478?

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 12,364,478

12,364,478
Factor Arrows
26,182,239
Factor Arrows
7883,177
Factor Arrows
1946,483
Factor Arrows
232,021
Factor Arrows
4347

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, 7, 19, 23, 43, 47

We can check our work by multiplying all of the prime factors together: 2 x 7 x 19 x 23 x 43 x 47 = 12,364,478

This can also be written as 21 x 71 x 191 x 231 x 431 x 471 = 12,364,478

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


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