Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 55: | \[{19^{55}-1\over18}\] | 151 × 911 × 104281 × 62060021 × 484536191701<12> × 2762720155370058278742863792112809157901<40> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 55: | \[{19^{55}-1\over18}\] | 151 × 911 × 104281 × 62060021 × 484536191701<12> × 2762720155370058278742863792112809157901<40> |