Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 70: | \[{22^{70}-1\over21}\] | 7 × 23 × 29 × 43 × 71 × 86969 × 224071 × 245411 × 882701 × 16968421 × 57036911 × 108635136821<12> × 25375062902561<14> × 2765572455580426279379621<25> |