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MathNet 2019-part-07 — 184 problems (EN–VI) Question 113

Math Olympiad Vault · MathNet 2019-part-07 — 184 problems (EN–VI)

Question 113

Three numbers $2^{100}$, $3^{100}$ and $5^{100}$ are written on a long paper strip without any space in-between, thus, creating one big number $N$. Arsenii claims that he can change the last digit of number $N$ so that the new number is a power of $13$. Is he right?