Base 29 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 69: | \[{29^{69}-1\over28}\] | 13 × 67 × 139 × 131327761273<12> × 1173922372300235340427<22> × 153912874105237767355544773738256170456912399898057768858434219<63> |