Base 29 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 67: | \[{29^{67}-1\over28}\] | 4691 × 7237 × 100619886317457409306783811775231211387306321569167172292358009748261622655540650925221433<90> |