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To get the Greates Common Factor (GCF) of 2002 and 2523 we need to factor each value first and then we choose all the copies of factors and multiply them:
|2002: ||2|| ||7||11||13|| || |
|2523: || ||3|| || || ||29||29|
|GCF: || || || || || || || |
The Greates Common Factor (GCF) is: 1