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To get the Greates Common Factor (GCF) of 22 and 9999 we need to factor each value first and then we choose all the copies of factors and multiply them:
|22: ||2|| || ||11|| |
|9999: || ||3||3||11||101|
|GCF: || || || ||11|| |
The Greates Common Factor (GCF) is: 11