Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 223: | \[{22^{223}-1\over21}\] | 6691 × 37019 × 123989 × 2444527 × 97006339 × 121952174129<12> × [12290092686220056200395871789135287912277970202881451759375228292763023431397937211882010528429766650014338444909000429321533223157944442167192219287910524662858337216052668382462985220210136098126984790059954519272929671253521887104497799017153002665279337331<260>] |