Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
183: | \[{3^{183}-1\over2}\] | 13 × 733 × 603901 × 97806913 × 2421854958301<13> × 105293313660391861035901<24> × 7165195867462155138286987098273769<34> |