Q: What are the prime factors of the number 513,126,144?

 A: 2, 3, 61, 1217

Why are those the prime factors of the number 513,126,144?

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 513,126,144

513,126,144
Factor Arrows
2256,563,072
Factor Arrows
2128,281,536
Factor Arrows
264,140,768
Factor Arrows
232,070,384
Factor Arrows
216,035,192
Factor Arrows
28,017,596
Factor Arrows
24,008,798
Factor Arrows
22,004,399
Factor Arrows
3668,133
Factor Arrows
3222,711
Factor Arrows
374,237
Factor Arrows
611,217

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:

2, 3, 61, 1217

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 61 x 1,217 = 513,126,144

This can also be written as 28 x 33 x 611 x 1,2171 = 513,126,144

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


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