Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 115: | \[{23^{115}-1\over22}\] | 461 × 1289 × 292561 × 831603031789<12> × 1920647391913<13> × 22412430154357855698961488981703308916921<41> × 28990488449921080692492471080111493557055199347305037079060864260297067922505961<80> |