Q: What are the factor combinations of the number 155,143?
A:
Positive:
1 x 155143167 x 929
Negative:
-1 x -155143-167 x -929
A:
Positive:
1 x 155143167 x 929
Negative:
-1 x -155143-167 x -929
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 155,143, 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 | 155,143 | |
-1 | -155,143 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,143.
Example:
1 x 155,143 = 155,143
and
-1 x -155,143 = 155,143
Notice both answers equal 155,143
With that explanation out of the way, let's continue. Next, we take the number 155,143 and divide it by 2:
155,143 ÷ 2 = 77,571.5
If the quotient is a whole number, then 2 and 77,571.5 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 | 155,143 | |
-1 | -155,143 |
Now, we try dividing 155,143 by 3:
155,143 ÷ 3 = 51,714.3333
If the quotient is a whole number, then 3 and 51,714.3333 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 | 155,143 | |
-1 | -155,143 |
Let's try dividing by 4:
155,143 ÷ 4 = 38,785.75
If the quotient is a whole number, then 4 and 38,785.75 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 | 155,143 | |
-1 | 155,143 |
If you did it right, you will end up with this table:
1 | 167 | 929 | 155,143 |
-1 | -167 | -929 | -155,143 |
Here are some more numbers to try:
Try the factor calculator