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2012 Serbia JBMO TST
1
Find all $4$-digit numbers $\overline{abba}$
Find all $4$-digit numbers $\overline{abba}$
Source: Serbia JBMO TST 2012
October 6, 2023
number theory
Problem Statement
Find all
4
4
4
-digit numbers
a
b
b
a
‾
\overline{abba}
abba
that are equal to the product of some consecutive prime numbers.
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