Q: What are the factor combinations of the number 311,513,515?
A:
Positive:
1 x 3115135155 x 62302703
Negative:
-1 x -311513515-5 x -62302703
A:
Positive:
1 x 3115135155 x 62302703
Negative:
-1 x -311513515-5 x -62302703
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 311,513,515, it is easier to work with a table - it's called factoring from the outside in.
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 | 311,513,515 | |
-1 | -311,513,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 311,513,515.
Example:
1 x 311,513,515 = 311,513,515
and
-1 x -311,513,515 = 311,513,515
Notice both answers equal 311,513,515
With that explanation out of the way, let's continue. Next, we take the number 311,513,515 and divide it by 2:
311,513,515 ÷ 2 = 155,756,757.5
If the quotient is a whole number, then 2 and 155,756,757.5 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 | 311,513,515 | |
-1 | -311,513,515 |
Now, we try dividing 311,513,515 by 3:
311,513,515 ÷ 3 = 103,837,838.3333
If the quotient is a whole number, then 3 and 103,837,838.3333 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 | 311,513,515 | |
-1 | -311,513,515 |
Let's try dividing by 4:
311,513,515 ÷ 4 = 77,878,378.75
If the quotient is a whole number, then 4 and 77,878,378.75 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 | 311,513,515 | |
-1 | 311,513,515 |
If you did it right, you will end up with this table:
1 | 5 | 62,302,703 | 311,513,515 |
-1 | -5 | -62,302,703 | -311,513,515 |
Here are some more numbers to try:
Try the factor calculator