Q: What are the prime factors of the number 377,857,440?

 A: 2, 3, 5, 47, 1861

Why are those the prime factors of the number 377,857,440?

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 377,857,440

377,857,440
Factor Arrows
2188,928,720
Factor Arrows
294,464,360
Factor Arrows
247,232,180
Factor Arrows
223,616,090
Factor Arrows
211,808,045
Factor Arrows
33,936,015
Factor Arrows
31,312,005
Factor Arrows
3437,335
Factor Arrows
587,467
Factor Arrows
471,861

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, 5, 47, 1861

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 3 x 5 x 47 x 1,861 = 377,857,440

This can also be written as 25 x 33 x 51 x 471 x 1,8611 = 377,857,440

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


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