Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 140: | \[{22^{140}-1\over21}\] | 52 × 7 × 23 × 29 × 43 × 71 × 97 × 181 × 401 × 4481 × 55441 × 83273 × 86969 × 150901 × 224071 × 245411 × 882701 × 16968421 × 34379269 × 57036911 × 66068941261<11> × 108635136821<12> × 816048655801<12> × 25375062902561<14> × 892792661763983821<18> × 10253921496675516661<20> × 2765572455580426279379621<25> |