Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 144: | \[{7^{144}-1\over6}\] | 26 × 32 × 52 × 13 × 17 × 19 × 37 × 43 × 73 × 181 × 193 × 409 × 1063 × 1201 × 42409 × 117307 × 129169 × 137089 × 169553 × 25726609 × 51385969 × 635311009 × 13841169553<11> × 32952799801<11> × 338325042961<12> × 33232924804801<14> |