Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 196: | \[{8^{196}-1\over7}\] | 32 × 5 × 72 × 13 × 29 × 43 × 113 × 127 × 197 × 337 × 1429 × 5419 × 14449 × 540961 × 748819 × 19707683773<11> × 4363953127297<13> × 4432676798593<13> × 4981857697937<13> × 26032885845392093851<20> × 40544859693521152369<20> × 2741672362528725535068727<25> × 17059410504738323992180849<26> |