Q: What are the factor combinations of the number 771,117,271?

 A:
Positive:   1 x 77111727167 x 1150921389 x 86642391453 x 5307075963 x 1293177921 x 97351
Negative: -1 x -771117271-67 x -11509213-89 x -8664239-1453 x -530707-5963 x -129317-7921 x -97351


How do I find the factor combinations of the number 771,117,271?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 771,117,271, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 771,117,271
-1 -771,117,271

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 771,117,271.

Example:
1 x 771,117,271 = 771,117,271
and
-1 x -771,117,271 = 771,117,271
Notice both answers equal 771,117,271

With that explanation out of the way, let's continue. Next, we take the number 771,117,271 and divide it by 2:

771,117,271 ÷ 2 = 385,558,635.5

If the quotient is a whole number, then 2 and 385,558,635.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 771,117,271
-1 -771,117,271

Now, we try dividing 771,117,271 by 3:

771,117,271 ÷ 3 = 257,039,090.3333

If the quotient is a whole number, then 3 and 257,039,090.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 771,117,271
-1 -771,117,271

Let's try dividing by 4:

771,117,271 ÷ 4 = 192,779,317.75

If the quotient is a whole number, then 4 and 192,779,317.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 771,117,271
-1 771,117,271
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

167891,4535,9637,92197,351129,317530,7078,664,23911,509,213771,117,271
-1-67-89-1,453-5,963-7,921-97,351-129,317-530,707-8,664,239-11,509,213-771,117,271

More Examples

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