Q: What are the prime factors of the number 619,648?

 A: 2, 47, 103

Why are those the prime factors of the number 619,648?

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 619,648

619,648
Factor Arrows
2309,824
Factor Arrows
2154,912
Factor Arrows
277,456
Factor Arrows
238,728
Factor Arrows
219,364
Factor Arrows
29,682
Factor Arrows
24,841
Factor Arrows
47103

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, 47, 103

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 47 x 103 = 619,648

This can also be written as 27 x 471 x 1031 = 619,648

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


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