Base 21 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 182: | \[{21^{182}-1\over20}\] | 2 × 11 × 43 × 79 × 631 × 3319 × 189437 × 81867661 × 516094151 × 97334207034611<14> × 7021471715414521<16> × 35381269315942497678572657090020747<35> × 1737708201406774525206464521323498021877<40> × 981183555175800288957395067736239079892543<42> × 4264091474110761334946377629947327910839217826620223120485043<61> |