1, 13.
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5 x 13 = 65 2 x 3 x 13 = 78 2 x 3 x 5 x 13 = 390, the LCM
13, 26, 39, 52, 65, 78, 91, 104, 117, 130, 143 . . .
The GCF is 13.
-187
13 is a prime number that will evenly divide into 65 (5 X 13 equals 65). 13 is the LCM of 13 and 65.