Base 29 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 91: | \[{29^{91}-1\over28}\] | 7 × 521 × 547 × 148123 × 19753189 × 88009573 × 4748492087<10> × 12038049479<11> × 14562475667481821232453230594294388275795091692751740849092507996181274251950547363753<86> |