Two Numbers That Have The Greatest Common Factor Of Eight Are:
16 and 56
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8 and 16
You can't name the greatest common factor of a single number. You need at lest two numbers to find a GCF.In order to have a GCF there must be two or more numbers.The factors of 64 are 1, 2, 4, 8, 16, 32, 64.
There are many possible pairs. 8, 904 160, 168 256, 328 24, 5320
2x and 6x
Any numbers that don't have common prime factors will do; for example, 23 and 32; 2x3 and 5x7, 3x5 and 2x7, etc.Any two consecutive numbers will have no common factor, for example, 8 and 9 (the first example I gave above), or 100 and 101. However, in the second example, 101 is not a composite number.