They have no common factor other than 1.
There is no common factor of 7 and 127 other than 1.
These numbers are co-prime, ie they have no common factor other than 1 which makes their GCF 1.
There is no common factor other than 1
The greatest common factor is 13. Both 26 and 91 are divisible by 13. The greatest common factor cannot be larger than the smallest number, so the greatest common factor in this case is the smallest number - 13, since it is a factor of the other two numbers.
254 cannot have a greatest common factor. To have a greatest common factor, there must be more than one number involved
Since 2 is a factor of 4a and the largest factor of 2 is 2, and thus the greatest common factor cannot be larger than 2, the greatest common factor is 2.
91 and 44 have no common factors, other than 1.
Yes, the greatest common factor is less than or equal to the smallest coefficient. For example, the greatest common factor of 38 and 8 is 2.
1. The numbers 55 and 27 are "relatively prime", meaning they have no common factor other than 1.
In order to have a "greatest common factor" you need to have more than one number, so that 175 has factor in common with another number.
Since the numbers 209 and 1000 share no common positive integer factors other than 1, the greatest common factor of the two numbers is 1.