Q: What are the prime factors of the number 214,142,103?

 A: 3, 7, 19, 1217

Why are those the prime factors of the number 214,142,103?

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 214,142,103

214,142,103
Factor Arrows
371,380,701
Factor Arrows
323,793,567
Factor Arrows
37,931,189
Factor Arrows
71,133,027
Factor Arrows
7161,861
Factor Arrows
723,123
Factor Arrows
191,217

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:

3, 7, 19, 1217

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 7 x 7 x 7 x 19 x 1,217 = 214,142,103

This can also be written as 33 x 73 x 191 x 1,2171 = 214,142,103

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


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