A:
Positive:
1 x 14522325119 x 764332931 x 468462179 x 1838269589 x 2465591501 x 967512449 x 592993121 x 46531
Negative:
-1 x -145223251-19 x -7643329-31 x -4684621-79 x -1838269-589 x -246559-1501 x -96751-2449 x -59299-3121 x -46531
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 145,223,251, 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 | 145,223,251 | |
| -1 | -145,223,251 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 145,223,251.
Example:
1 x 145,223,251 = 145,223,251
and
-1 x -145,223,251 = 145,223,251
Notice both answers equal 145,223,251
With that explanation out of the way, let's continue. Next, we take the number 145,223,251 and divide it by 2:
145,223,251 ÷ 2 = 72,611,625.5
If the quotient is a whole number, then 2 and 72,611,625.5 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 | 145,223,251 | |
| -1 | -145,223,251 |
Now, we try dividing 145,223,251 by 3:
145,223,251 ÷ 3 = 48,407,750.3333
If the quotient is a whole number, then 3 and 48,407,750.3333 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 | 145,223,251 | |
| -1 | -145,223,251 |
Let's try dividing by 4:
145,223,251 ÷ 4 = 36,305,812.75
If the quotient is a whole number, then 4 and 36,305,812.75 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 | 145,223,251 | |
| -1 | 145,223,251 |
If you did it right, you will end up with this table:
| 1 | 19 | 31 | 79 | 589 | 1,501 | 2,449 | 3,121 | 46,531 | 59,299 | 96,751 | 246,559 | 1,838,269 | 4,684,621 | 7,643,329 | 145,223,251 |
| -1 | -19 | -31 | -79 | -589 | -1,501 | -2,449 | -3,121 | -46,531 | -59,299 | -96,751 | -246,559 | -1,838,269 | -4,684,621 | -7,643,329 | -145,223,251 |
Here are some more numbers to try:
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