Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 237: | \[{8^{237}-1\over7}\] | 73 × 1423 × 2687 × 5689 × 49297 × 202029703 × 1113491139767<13> × 41851365145831<14> × 23728823512345609279<20> × 31357373417090093431<20> × 864328108984548257763049805767<30> × 19573690271784800408214873038427972853220421889<47> × 165881583766270315258032910858563450583741187377<48> |