A:
Positive:
1 x 1512975317 x 2161393311 x 1375432177 x 1964903701 x 2158312803 x 539774907 x 308337711 x 19621
Negative:
-1 x -151297531-7 x -21613933-11 x -13754321-77 x -1964903-701 x -215831-2803 x -53977-4907 x -30833-7711 x -19621
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 151,297,531, 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 | 151,297,531 | |
| -1 | -151,297,531 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,297,531.
Example:
1 x 151,297,531 = 151,297,531
and
-1 x -151,297,531 = 151,297,531
Notice both answers equal 151,297,531
With that explanation out of the way, let's continue. Next, we take the number 151,297,531 and divide it by 2:
151,297,531 ÷ 2 = 75,648,765.5
If the quotient is a whole number, then 2 and 75,648,765.5 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 | 151,297,531 | |
| -1 | -151,297,531 |
Now, we try dividing 151,297,531 by 3:
151,297,531 ÷ 3 = 50,432,510.3333
If the quotient is a whole number, then 3 and 50,432,510.3333 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 | 151,297,531 | |
| -1 | -151,297,531 |
Let's try dividing by 4:
151,297,531 ÷ 4 = 37,824,382.75
If the quotient is a whole number, then 4 and 37,824,382.75 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 | 151,297,531 | |
| -1 | 151,297,531 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 701 | 2,803 | 4,907 | 7,711 | 19,621 | 30,833 | 53,977 | 215,831 | 1,964,903 | 13,754,321 | 21,613,933 | 151,297,531 |
| -1 | -7 | -11 | -77 | -701 | -2,803 | -4,907 | -7,711 | -19,621 | -30,833 | -53,977 | -215,831 | -1,964,903 | -13,754,321 | -21,613,933 | -151,297,531 |
Here are some more numbers to try:
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