Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 86: | \[{22^{86}-1\over21}\] | 23 × 173 × 947 × 259799207 × 5928189493969854971555424440437874917187171<43> × 230381413915882509131006643270338220142016774517632612263<57> |