Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 192: | \[{7^{192}-1\over6}\] | 28 × 3 × 52 × 13 × 17 × 19 × 43 × 73 × 97 × 181 × 193 × 353 × 409 × 1201 × 2113 × 169553 × 7699649 × 9917569 × 104837857 × 134818753 × 596878081 × 16356157057<11> × 47072139617<11> × 531968664833<12> × 33232924804801<14> × 108604397663266369<18> × 5962150442139230211450049<25> |