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Additional values (Posted on 2017-01-22) Difficulty: 2 of 5
y=3^k+5^k (i)
equals 8 i.e. 2^3 when k=1

Are there additional integer values for k causing y of equation (i) to become a power of an integer?

List those ks or prove there are none.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Some ThoughtsPartial solution based on rewording the problemJer2017-01-23 10:26:10
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