What is the smallest prime divisor of $3^{11} + 5^7$?
(By the way, I know it's not 7 and 11. Hope that makes it easier!)
Winston grows green dragon apples. This year, he shipped of these apples to sell at supermarkets and kept the rest to make cider. Of all the green dragon apples he sold to the supermarkets, only of them were bought. If a total of green dragon apples were bought, how many green dragon apples did Winston keep to make cider?
