Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
417: | \[{3^{417}-1\over2}\] | 13 × 1669 × 5430731 × 43302949 × 2016598657 × 201360112381724767096677592621<30> × 115215201111546538317696820901417129607616709798043944747<57> × 19083369866261032297456687094115197506422965885481866987401392458583087645945119190313<86> |