Q: What are the prime factors of the number 71,036,800?

 A: 2, 5, 79, 281

Why are those the prime factors of the number 71,036,800?

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 71,036,800

71,036,800
Factor Arrows
235,518,400
Factor Arrows
217,759,200
Factor Arrows
28,879,600
Factor Arrows
24,439,800
Factor Arrows
22,219,900
Factor Arrows
21,109,950
Factor Arrows
2554,975
Factor Arrows
5110,995
Factor Arrows
522,199
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, 5, 79, 281

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 2 x 5 x 5 x 79 x 281 = 71,036,800

This can also be written as 27 x 52 x 791 x 2811 = 71,036,800

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


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