Q: What are the prime factors of the number 74,233,456?

 A: 2, 11, 19, 79, 281

Why are those the prime factors of the number 74,233,456?

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 74,233,456

74,233,456
Factor Arrows
237,116,728
Factor Arrows
218,558,364
Factor Arrows
29,279,182
Factor Arrows
24,639,591
Factor Arrows
11421,781
Factor Arrows
1922,199
Factor Arrows
79281

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, 19, 79, 281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 19 x 79 x 281 = 74,233,456

This can also be written as 24 x 111 x 191 x 791 x 2811 = 74,233,456

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


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