Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 221: | \[{23^{221}-1\over22}\] | 103 × 35803 × 9222331 × 47691619 × 480393499 × 1118812501 × 71028703210427<14> × 62246266355102810647<20> × 1677558380391227047663<22> × [61490835960495715636634467211848608270258926242709485284651117076135150847578037271545179001986937064114663844382736193367911148038082777966857975210205331861800511386834796389054835962457589855556068564817<206>] |