Q: What are the factor combinations of the number 127,623,423?

 A:
Positive:   1 x 1276234233 x 4254114171 x 1797513213 x 599171359 x 3554971077 x 1184991669 x 764675007 x 25489
Negative: -1 x -127623423-3 x -42541141-71 x -1797513-213 x -599171-359 x -355497-1077 x -118499-1669 x -76467-5007 x -25489


How do I find the factor combinations of the number 127,623,423?

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 127,623,423, 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.

1 127,623,423
-1 -127,623,423

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 127,623,423.

Example:
1 x 127,623,423 = 127,623,423
and
-1 x -127,623,423 = 127,623,423
Notice both answers equal 127,623,423

With that explanation out of the way, let's continue. Next, we take the number 127,623,423 and divide it by 2:

127,623,423 ÷ 2 = 63,811,711.5

If the quotient is a whole number, then 2 and 63,811,711.5 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:

1 127,623,423
-1 -127,623,423

Now, we try dividing 127,623,423 by 3:

127,623,423 ÷ 3 = 42,541,141

If the quotient is a whole number, then 3 and 42,541,141 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

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

1 3 42,541,141 127,623,423
-1 -3 -42,541,141 -127,623,423

Let's try dividing by 4:

127,623,423 ÷ 4 = 31,905,855.75

If the quotient is a whole number, then 4 and 31,905,855.75 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 3 42,541,141 127,623,423
-1 -3 -42,541,141 127,623,423
Keep dividing by the next highest number until you cannot divide anymore.

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

13712133591,0771,6695,00725,48976,467118,499355,497599,1711,797,51342,541,141127,623,423
-1-3-71-213-359-1,077-1,669-5,007-25,489-76,467-118,499-355,497-599,171-1,797,513-42,541,141-127,623,423

More Examples

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