Q: What are the prime factors of the number 222,163,236?

 A: 2, 3, 31, 73, 101

Why are those the prime factors of the number 222,163,236?

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 222,163,236

222,163,236
Factor Arrows
2111,081,618
Factor Arrows
255,540,809
Factor Arrows
318,513,603
Factor Arrows
36,171,201
Factor Arrows
32,057,067
Factor Arrows
3685,689
Factor Arrows
3228,563
Factor Arrows
317,373
Factor Arrows
73101

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, 31, 73, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 3 x 31 x 73 x 101 = 222,163,236

This can also be written as 22 x 35 x 311 x 731 x 1011 = 222,163,236

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


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