Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 517: | \[{3^{517}-1\over2}\] | 23 × 1223 × 3851 × 21997 × 5112661 × 96656723 × 18121754584561<14> × 11564421035953127<17> × 195823481748025157463422904654781<33> × 439353102824911497759602166124705290731<39> × 110582335504499023420193738831204436303562234622785352330412196778153030043660971684441387633094950503099807268663433937<120> |