Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 230: | \[{23^{230}-1\over22}\] | 23 × 3 × 31 × 41 × 47 × 139 × 211 × 461 × 1013 × 1289 × 2531 × 292561 × 1641281 × 23394911 × 52626071 × 1522029233 × 64953419561<11> × 224282779141<12> × 831603031789<12> × 1920647391913<13> × 2395221667271<13> × 60520489159749901<17> × 8992084477503108190002461<25> × 630395198722647305072823734110631<33> × 22412430154357855698961488981703308916921<41> × 28990488449921080692492471080111493557055199347305037079060864260297067922505961<80> |