Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 400: | \[{3^{400}-1\over2}\] | 25 × 53 × 112 × 17 × 41 × 61 × 101 × 151 × 193 × 401 × 1181 × 8951 × 14401 × 133201 × 391151 × 394201 × 22996651 × 42521761 × 18055139801<11> × 61070817601<11> × 128653413121<12> × 61459926512826500975801<23> × 54482419084387063896343257364278812798757304500791752529639086947312737201<74> |