Q: What are the prime factors of the number 70,292,416?

 A: 2, 17, 23, 53

Why are those the prime factors of the number 70,292,416?

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 70,292,416

70,292,416
Factor Arrows
235,146,208
Factor Arrows
217,573,104
Factor Arrows
28,786,552
Factor Arrows
24,393,276
Factor Arrows
22,196,638
Factor Arrows
21,098,319
Factor Arrows
1764,607
Factor Arrows
232,809
Factor Arrows
5353

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, 17, 23, 53

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 17 x 23 x 53 x 53 = 70,292,416

This can also be written as 26 x 171 x 231 x 532 = 70,292,416

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


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