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Serbia JBMO TST
2012 Serbia JBMO TST
1
1
Part of
2012 Serbia JBMO TST
Problems
(1)
Find all $4$-digit numbers $\overline{abba}$
Source: Serbia JBMO TST 2012
10/6/2023
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.
number theory