Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 175: | \[{28^{175}-1\over27}\] | 113 × 2521 × 15101 × 106801 × 206501 × 637421 × 4422461 × 5277241901<10> × 6813064001<10> × 7984305701<10> × 30087331411201<14> × 10420018720731016427597701<26> × 99885743242098024883367081<26> × 275616088352266674042388557364615369673418412745317462609311397926483058602526600836332519348153703648810909689081419069079201<126> |