Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 231: | \[{3^{231}-1\over2}\] | 13 × 23 × 1093 × 3697 × 3851 × 368089 × 51457561 × 2413941289 × 7151459701<10> × 73155606217<11> × 76831835389<11> × 9592974016403852681107579746773665955769529<43> |