Q: What are the prime factors of the number 154,623,448?

 A: 2, 7, 1231, 2243

Why are those the prime factors of the number 154,623,448?

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 154,623,448

154,623,448
Factor Arrows
277,311,724
Factor Arrows
238,655,862
Factor Arrows
219,327,931
Factor Arrows
72,761,133
Factor Arrows
1,2312,243

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, 1231, 2243

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 1,231 x 2,243 = 154,623,448

This can also be written as 23 x 71 x 1,2311 x 2,2431 = 154,623,448

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


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