IrMO 2011 Problem 10

Find with proof all solutions in nonnegative integers $a,b,c,d$ of the equation $11^a5^b-3^c2^d=1$

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.