Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 260: | \[{12^{260}-1\over11}\] | 52 × 132 × 29 × 53 × 79 × 131 × 677 × 1301 × 19141 × 22621 × 36037 × 37831 × 222379 × 477517 × 20369233 × 52960051 × 85403261 × 1932288541 × 596827590710414051<18> × 2200289654266792155913<22> × 38346067178495390031121<23> × 25993663579055640467321336114621<32> × 2153563054348801518961215117565061<34> × 552208068913126058374200302558579741<36> × 3417149308806048848886113884045970301001<40> |