MathDB
ASU 577 Commonwealth of Independent States 1991 digits ^a+1, k^b+1

Source:

August 15, 2019
number theoryDigits

Problem Statement

Find all integers k>1k > 1 such that for some distinct positive integers a,ba, b, the number ka+1k^a + 1 can be obtained from kb+1k^b + 1 by reversing the order of its (decimal) digits.
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