Q: What are the prime factors of the number 245,751,156?

 A: 2, 3, 7, 47, 20749

Why are those the prime factors of the number 245,751,156?

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 245,751,156

245,751,156
Factor Arrows
2122,875,578
Factor Arrows
261,437,789
Factor Arrows
320,479,263
Factor Arrows
36,826,421
Factor Arrows
7975,203
Factor Arrows
4720,749

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, 7, 47, 20749

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 47 x 20,749 = 245,751,156

This can also be written as 22 x 32 x 71 x 471 x 20,7491 = 245,751,156

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


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