Q: What are the prime factors of the number 1,947,712?

 A: 2, 13, 2341

Why are those the prime factors of the number 1,947,712?

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 1,947,712

1,947,712
Factor Arrows
2973,856
Factor Arrows
2486,928
Factor Arrows
2243,464
Factor Arrows
2121,732
Factor Arrows
260,866
Factor Arrows
230,433
Factor Arrows
132,341

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, 13, 2341

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 13 x 2,341 = 1,947,712

This can also be written as 26 x 131 x 2,3411 = 1,947,712

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


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