Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 178: | \[{18^{178}-1\over17}\] | 19 × 179 × 2671 × 9134249 × 1412957489047649<16> × 36037321554594103<17> × 2373467556415439369<19> × 5913313191525493627<19> × 17280008471529631881887<23> × 55248602049369094679202144729777041<35> × 19707963950138874818292198421797573337<38> × 1447107636250664791821249419059314568773520219<46> |