Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 148: | \[{22^{148}-1\over21}\] | 5 × 23 × 97 × 149 × 2221 × 48397 × 310727 × 105196921 × 1322219481421<13> × 1886989139768881<16> × 9748223441962188353<19> × 13014653514302412979<20> × 3795521911775341204317584693<28> × 32376512187171115691518687263072434879721576069672171712459962775834611659497<77> |