Q: What are the prime factors of the number 307,761,344?

 A: 2, 11, 23, 83, 229

Why are those the prime factors of the number 307,761,344?

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 307,761,344

307,761,344
Factor Arrows
2153,880,672
Factor Arrows
276,940,336
Factor Arrows
238,470,168
Factor Arrows
219,235,084
Factor Arrows
29,617,542
Factor Arrows
24,808,771
Factor Arrows
11437,161
Factor Arrows
2319,007
Factor Arrows
83229

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, 11, 23, 83, 229

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 11 x 23 x 83 x 229 = 307,761,344

This can also be written as 26 x 111 x 231 x 831 x 2291 = 307,761,344

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


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