JBMO-SL 2001 Problem 3

Find all the three-digit numbers $\overline{abc}$ such that the $6003$ -digit number $\overline{abcabc\ldots abc}$ is divisible by $91$ .

Dataset text AI-MO AoPS. Quoted with source.

Solutions

No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.