The GCF of 255 and 256 is 1.
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The greatest common factor of 286 and 251 is 1.
Ah, the greatest common factor of 128 and 256 is 128. You see, the greatest common factor is the largest number that divides evenly into both numbers, and in this case, 128 is the biggest number that fits that description. Just imagine those numbers as happy little friends, sharing their common factor joyfully.
Common factors of 286 and 242 are: 1, 2, 11, and 22.
Well, isn't that a happy little question? Let's find the greatest common factor of 256 and 640. We can start by listing the factors of each number and then finding the largest number they have in common. It looks like the greatest common factor of 256 and 640 is 128. Just like painting, math can be a joyful experience when we break it down into simple steps.
Well, well, well, aren't we feeling all mathematical today? The greatest common factor of 16 and 256 is 16. It's like finding out you have a favorite child - sorry 256, but 16 takes the cake this time.