Q: What are the prime factors of the number 1,930,208?

 A: 2, 7, 1231

Why are those the prime factors of the number 1,930,208?

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 1,930,208

1,930,208
Factor Arrows
2965,104
Factor Arrows
2482,552
Factor Arrows
2241,276
Factor Arrows
2120,638
Factor Arrows
260,319
Factor Arrows
78,617
Factor Arrows
71,231

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, 1231

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 7 x 1,231 = 1,930,208

This can also be written as 25 x 72 x 1,2311 = 1,930,208

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


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