Q: What are the prime factors of the number 210,361,308?

 A: 2, 3, 137, 199, 643

Why are those the prime factors of the number 210,361,308?

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 210,361,308

210,361,308
Factor Arrows
2105,180,654
Factor Arrows
252,590,327
Factor Arrows
317,530,109
Factor Arrows
137127,957
Factor Arrows
199643

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, 137, 199, 643

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 137 x 199 x 643 = 210,361,308

This can also be written as 22 x 31 x 1371 x 1991 x 6431 = 210,361,308

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


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