G re a t es t co mm o n f a c t or i s t h e hi g h es t n u mb er b y w i t c h 49 an d 91 c an b e d i v i d e d 49 : 7 7 : 7 91 : 7 13 : 13 GCF = 7 G re a t es t co mm o n f a c t or o f 49 an d 91 i s e q u a l t o 7.
The greatest common factor of 49 and 91 is 7. This is found by listing the factors of each number and identifying the largest common factor. The common factors of 49 and 91 are 1 and 7, making 7 the GCF.
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