A:
Positive:
1 x 1512020517 x 2160029311 x 1374564113 x 1163092777 x 196366391 x 1661561143 x 10573571001 x 151051
Negative:
-1 x -151202051-7 x -21600293-11 x -13745641-13 x -11630927-77 x -1963663-91 x -1661561-143 x -1057357-1001 x -151051
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 151,202,051, 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 | 151,202,051 | |
| -1 | -151,202,051 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,202,051.
Example:
1 x 151,202,051 = 151,202,051
and
-1 x -151,202,051 = 151,202,051
Notice both answers equal 151,202,051
With that explanation out of the way, let's continue. Next, we take the number 151,202,051 and divide it by 2:
151,202,051 ÷ 2 = 75,601,025.5
If the quotient is a whole number, then 2 and 75,601,025.5 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 | 151,202,051 | |
| -1 | -151,202,051 |
Now, we try dividing 151,202,051 by 3:
151,202,051 ÷ 3 = 50,400,683.6667
If the quotient is a whole number, then 3 and 50,400,683.6667 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 | 151,202,051 | |
| -1 | -151,202,051 |
Let's try dividing by 4:
151,202,051 ÷ 4 = 37,800,512.75
If the quotient is a whole number, then 4 and 37,800,512.75 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 | 151,202,051 | |
| -1 | 151,202,051 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 77 | 91 | 143 | 1,001 | 151,051 | 1,057,357 | 1,661,561 | 1,963,663 | 11,630,927 | 13,745,641 | 21,600,293 | 151,202,051 |
| -1 | -7 | -11 | -13 | -77 | -91 | -143 | -1,001 | -151,051 | -1,057,357 | -1,661,561 | -1,963,663 | -11,630,927 | -13,745,641 | -21,600,293 | -151,202,051 |
Here are some more numbers to try:
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