Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 195: | \[{18^{195}-1\over17}\] | 73 × 31 × 41 × 79 × 521 × 601 × 911 × 2711 × 71761 × 270271 × 558721 × 23986951 × 7424759473<10> × 29759719289<11> × 170258429679493134487<21> × 260674349667764744544365521<27> × 7122627224638909118690351246321<31> × 7298714760067274975493016292308651066243741403325579608525753108756026254909660949456623600335577375871<103> |