Q: What are the prime factors of the number 155,288,736?

 A: 2, 3, 29, 18593

Why are those the prime factors of the number 155,288,736?

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 155,288,736

155,288,736
Factor Arrows
277,644,368
Factor Arrows
238,822,184
Factor Arrows
219,411,092
Factor Arrows
29,705,546
Factor Arrows
24,852,773
Factor Arrows
31,617,591
Factor Arrows
3539,197
Factor Arrows
2918,593

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, 29, 18593

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 29 x 18,593 = 155,288,736

This can also be written as 25 x 32 x 291 x 18,5931 = 155,288,736

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


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