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The Greatest Common Factor (GCF) between two numbers is the largest positive integer that can divide both numbers evenly (without remainders). Prime
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Are you applying now or next cycle?
Don't take the MCAT again unless explicitly told by admissions. What is your mission? Do you feel it beneath you to go to a non brand school?
You have the metrics, but you should balance your list (see Faha's suggestions). You should also network and connect with more students at the schools you are interested in. I'm sure you can't give more information about your organization so we can't tell if that alone could be appealing.