Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 157: | \[{9^{157}-1\over8}\] | 9421 × 252457 × 3381925092493<13> × 159420524134654609<18> × 9891109125337566719<19> × 32129434337475049222622287<26> × 156438005527933564247063011<27> × 1283810768507270931382867729773882314783<40> |