Q: What are the prime factors of the number 205,430,346?

 A: 2, 3, 11, 17, 61031

Why are those the prime factors of the number 205,430,346?

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 205,430,346

205,430,346
Factor Arrows
2102,715,173
Factor Arrows
334,238,391
Factor Arrows
311,412,797
Factor Arrows
111,037,527
Factor Arrows
1761,031

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, 11, 17, 61031

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 11 x 17 x 61,031 = 205,430,346

This can also be written as 21 x 32 x 111 x 171 x 61,0311 = 205,430,346

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


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