Q: What are the prime factors of the number 158,487,784?

 A: 2, 7, 13, 29, 7507

Why are those the prime factors of the number 158,487,784?

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 158,487,784

158,487,784
Factor Arrows
279,243,892
Factor Arrows
239,621,946
Factor Arrows
219,810,973
Factor Arrows
72,830,139
Factor Arrows
13217,703
Factor Arrows
297,507

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, 13, 29, 7507

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 13 x 29 x 7,507 = 158,487,784

This can also be written as 23 x 71 x 131 x 291 x 7,5071 = 158,487,784

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


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