Q: What are the prime factors of the number 105,122,544?

 A: 2, 3, 113, 19381

Why are those the prime factors of the number 105,122,544?

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 105,122,544

105,122,544
Factor Arrows
252,561,272
Factor Arrows
226,280,636
Factor Arrows
213,140,318
Factor Arrows
26,570,159
Factor Arrows
32,190,053
Factor Arrows
11319,381

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, 113, 19381

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 113 x 19,381 = 105,122,544

This can also be written as 24 x 31 x 1131 x 19,3811 = 105,122,544

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


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