Q: What are the prime factors of the number 163,743,102?

 A: 2, 3, 19, 113, 223

Why are those the prime factors of the number 163,743,102?

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 163,743,102

163,743,102
Factor Arrows
281,871,551
Factor Arrows
327,290,517
Factor Arrows
39,096,839
Factor Arrows
19478,781
Factor Arrows
1925,199
Factor Arrows
113223

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, 19, 113, 223

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 19 x 19 x 113 x 223 = 163,743,102

This can also be written as 21 x 32 x 192 x 1131 x 2231 = 163,743,102

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


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