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The next number in the sequence 2, 4, 16, 64 is 256.
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.
They are: 1, 2, 4, 8, 16, 32, 64, 128, 256.
No. The divisors of 256 are 1, 2, 4, 8, 16, 32, 64, 128, 256.
The GCF of 158 and 256 is 2. This leaves 79 and 128 remainder after division respectively. There is actually no other common factor aside from 1 between them as 79 is prime and doesn't go into 128.