Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 172: | \[{22^{172}-1\over21}\] | 5 × 23 × 97 × 173 × 947 × 1721 × 259799207 × 4564362797<10> × 1085519816794745341<19> × 5928189493969854971555424440437874917187171<43> × 230381413915882509131006643270338220142016774517632612263<57> × 6789065969364790440987824364209131773584899465960801776430978532796830013164598589<82> |