Q: What are the prime factors of the number 618,496?

 A: 2, 151

Why are those the prime factors of the number 618,496?

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 618,496

618,496
Factor Arrows
2309,248
Factor Arrows
2154,624
Factor Arrows
277,312
Factor Arrows
238,656
Factor Arrows
219,328
Factor Arrows
29,664
Factor Arrows
24,832
Factor Arrows
22,416
Factor Arrows
21,208
Factor Arrows
2604
Factor Arrows
2302
Factor Arrows
2151

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, 151

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 2 x 2 x 2 x 2 x 151 = 618,496

This can also be written as 212 x 1511 = 618,496

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


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