Q: What are the prime factors of the number 7,621,888?

 A: 2, 19, 1567

Why are those the prime factors of the number 7,621,888?

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 7,621,888

7,621,888
Factor Arrows
23,810,944
Factor Arrows
21,905,472
Factor Arrows
2952,736
Factor Arrows
2476,368
Factor Arrows
2238,184
Factor Arrows
2119,092
Factor Arrows
259,546
Factor Arrows
229,773
Factor Arrows
191,567

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, 19, 1567

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 19 x 1,567 = 7,621,888

This can also be written as 28 x 191 x 1,5671 = 7,621,888

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


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