Q: What are the prime factors of the number 6,172,416?

 A: 2, 3, 19, 47

Why are those the prime factors of the number 6,172,416?

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 6,172,416

6,172,416
Factor Arrows
23,086,208
Factor Arrows
21,543,104
Factor Arrows
2771,552
Factor Arrows
2385,776
Factor Arrows
2192,888
Factor Arrows
296,444
Factor Arrows
248,222
Factor Arrows
224,111
Factor Arrows
38,037
Factor Arrows
32,679
Factor Arrows
3893
Factor Arrows
1947

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, 19, 47

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 3 x 3 x 3 x 19 x 47 = 6,172,416

This can also be written as 28 x 33 x 191 x 471 = 6,172,416

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


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