Q: What are the prime factors of the number 123,445,300?

 A: 2, 5, 11, 112223

Why are those the prime factors of the number 123,445,300?

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 123,445,300

123,445,300
Factor Arrows
261,722,650
Factor Arrows
230,861,325
Factor Arrows
56,172,265
Factor Arrows
51,234,453
Factor Arrows
11112,223

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, 5, 11, 112223

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 11 x 112,223 = 123,445,300

This can also be written as 22 x 52 x 111 x 112,2231 = 123,445,300

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


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