The only common factor of 343 and 64 is 1.
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343 is composite, because it has factors other than 1 and 343. It is the cube of 7 (7 x 7 x 7). Or 7 x 49 = 343. A prime number is a number that only has itself and one as factors, such as 3.
The cube number pattern doesn't end.The first 12 cube numbers are:1, 8, 27, 64, 125, 216, 343, 512, 729, 1000, 1331, 1728...
The GCF of 8 and 343 is 1. Since there is no common prime factor, you must look for a number that will divide into both 8 and 343. This number is 1. Therefore, the greatest common factor is 1
It is: 343
No. 64 is a positive number.