Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 55: | \[{9^{55}-1\over8}\] | 113 × 23 × 61 × 67 × 661 × 1321 × 3851 × 659671 × 24472341743191<14> × 560088668384411<15> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 55: | \[{9^{55}-1\over8}\] | 113 × 23 × 61 × 67 × 661 × 1321 × 3851 × 659671 × 24472341743191<14> × 560088668384411<15> |