Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 278: | \[{12^{278}-1\over11}\] | 13 × 2503 × 32830711631<11> × 191043189673024621<18> × 149723271154501574581<21> × 143650345994195628139073964067<30> × 202960904636644619042134297569606535376821<42> × 13976446202665769757077661403698383112061728500003<50> × 5596781752668998296324213182011813581692497481397488447553<58> × 1342252293639677786112433290408438740688955155541371153388457379745069<70> |