A:
Positive:
1 x 1516115155 x 3032230311 x 1378286523 x 659180555 x 2756573115 x 1318361253 x 5992551265 x 119851
Negative:
-1 x -151611515-5 x -30322303-11 x -13782865-23 x -6591805-55 x -2756573-115 x -1318361-253 x -599255-1265 x -119851
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 151,611,515, 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 | 151,611,515 | |
| -1 | -151,611,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,611,515.
Example:
1 x 151,611,515 = 151,611,515
and
-1 x -151,611,515 = 151,611,515
Notice both answers equal 151,611,515
With that explanation out of the way, let's continue. Next, we take the number 151,611,515 and divide it by 2:
151,611,515 ÷ 2 = 75,805,757.5
If the quotient is a whole number, then 2 and 75,805,757.5 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 | 151,611,515 | |
| -1 | -151,611,515 |
Now, we try dividing 151,611,515 by 3:
151,611,515 ÷ 3 = 50,537,171.6667
If the quotient is a whole number, then 3 and 50,537,171.6667 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 | 151,611,515 | |
| -1 | -151,611,515 |
Let's try dividing by 4:
151,611,515 ÷ 4 = 37,902,878.75
If the quotient is a whole number, then 4 and 37,902,878.75 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 | 151,611,515 | |
| -1 | 151,611,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 23 | 55 | 115 | 253 | 1,265 | 119,851 | 599,255 | 1,318,361 | 2,756,573 | 6,591,805 | 13,782,865 | 30,322,303 | 151,611,515 |
| -1 | -5 | -11 | -23 | -55 | -115 | -253 | -1,265 | -119,851 | -599,255 | -1,318,361 | -2,756,573 | -6,591,805 | -13,782,865 | -30,322,303 | -151,611,515 |
Here are some more numbers to try:
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