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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.

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19

(19 x 1 = 19 and 19 x 2 = 38)
The GCF is 19.
The GCF of 19 & 38 is.... 19 !

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Wiki User

7y ago
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19 and 38's highest common factor is 19.

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Wiki User

8y ago
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Q: What is the greatest common factor of 19 and 38?
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