Q: What are the prime factors of the number 42,013,104?

 A: 2, 3, 7, 19, 6581

Why are those the prime factors of the number 42,013,104?

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 42,013,104

42,013,104
Factor Arrows
221,006,552
Factor Arrows
210,503,276
Factor Arrows
25,251,638
Factor Arrows
22,625,819
Factor Arrows
3875,273
Factor Arrows
7125,039
Factor Arrows
196,581

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, 7, 19, 6581

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 19 x 6,581 = 42,013,104

This can also be written as 24 x 31 x 71 x 191 x 6,5811 = 42,013,104

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


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