# Greatest Common Factor

Written by Jerry Ratzlaff on . Posted in Mathematics

Greatest common factor is the highest number that divides exactly into two or more numbers.

• factors of $$\;12\;$$ are $$\;1,\; 2,\; 3,\; 4,\;6\;$$ and $$\;12\;$$
• factors of $$\;16\;$$ are $$\;1,\; 2,\; 4,\; 8\;$$ and $$\;16\;$$
• greatest common factor of $$\;12\;$$ and $$\;16\;$$ is $$\;4\;$$