The GCF is 1.
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38=1*2*19 58=1*2*29 highest common factor is 2
26 greatest factor is itself, 19 is a prime number so it is 19...they dont have a same common factor but 26 x 19 is 494...
It is 1 because 7 and 19 are prime numbers
The factors of 17 are 1 and 17. The factors of 19 are 1 and 19. The only common factor is 1. Therefore, the least (lowest) common factor is 1 and the greatest (highest) common factor is 1.
The greatest common factor (GCF) of two numbers is the largest number that divides both numbers without leaving a remainder. In this case, the numbers 19 and 38 have a GCF of 19. This is because 19 is a prime number and the only common factor of 19 and 38. Therefore, the GCF of 19 and 38 is 19.