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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!)

 Oct 11, 2020
 #1
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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?

 Oct 11, 2020
 #2
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The smallest prime divisor is 13.

 Oct 11, 2020
 #3
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3^11  +  5^7 =255,272

 

255272 = 2^3 * 17 * 1877  What is the smallest prime divisor?

 Oct 11, 2020
 #4
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It is 2 because there are 3 2s in255272

 Oct 16, 2020

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