Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
66: | \[{22^{66}-1\over21}\] | 3 × 132 × 23 × 67 × 89 × 353 × 463 × 9967 × 121758187 × 1176469537 × 285451051007<12> × 5530862298437303257<19> × 73986678146786983022017<23> |