Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 108: | \[{7^{108}-1\over6}\] | 24 × 33 × 52 × 13 × 19 × 37 × 43 × 109 × 181 × 811 × 1063 × 2377 × 26893 × 117307 × 2583253 × 13841169553<11> × 167039577217<12> × 590297313273013<15> × 1628413557556843<16> |