Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 216: | \[{7^{216}-1\over6}\] | 25 × 33 × 52 × 13 × 19 × 37 × 43 × 73 × 109 × 181 × 193 × 409 × 811 × 1063 × 1201 × 2377 × 26893 × 40177 × 42409 × 117307 × 137089 × 2583253 × 13841169553<11> × 32952799801<11> × 167039577217<12> × 590297313273013<15> × 1628413557556843<16> × 60922880584567163834041<23> × 2872770591829080828336687857571193<34> |