Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 225: | \[{8^{225}-1\over7}\] | 31 × 73 × 151 × 271 × 601 × 631 × 1801 × 23311 × 100801 × 115201 × 262657 × 348031 × 617401 × 1605151 × 10567201 × 1348206751 × 49971617830801<14> × 13861369826299351<17> × 1094270085398478390395590841401<31> × 2842496263188647640089794561760551<34> × 470390038503476855180627941942761032401<39> |