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To get the Greates Common Factor (GCF) of 286 and 812 we need to factor each value first and then we choose all the copies of factors and multiply them:
|286: ||2|| || ||11||13|| |
|812: ||2||2||7|| || ||29|
|GCF: ||2|| || || || || |
The Greates Common Factor (GCF) is: 2