Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
191: | \[{12^{191}-1\over11}\] | 383 × 2293 × 5576463887<10> × 492394777262152830140779120613620261<36> × 5011297079889469192999311802074780570901209987243642337684933599670981145167969755958766216665511353401711328613499376505460601894122960696790191439504549<154> |