Q: What are the prime factors of the number 56,740,644?

 A: 2, 3, 71, 79, 281

Why are those the prime factors of the number 56,740,644?

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 56,740,644

56,740,644
Factor Arrows
228,370,322
Factor Arrows
214,185,161
Factor Arrows
34,728,387
Factor Arrows
31,576,129
Factor Arrows
7122,199
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, 3, 71, 79, 281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 71 x 79 x 281 = 56,740,644

This can also be written as 22 x 32 x 711 x 791 x 2811 = 56,740,644

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


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