Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 207: | \[{6^{207}-1\over5}\] | 19 × 43 × 47 × 139 × 2467 × 3221 × 11731 × 399097 × 7505944891<10> × 1236385853432057889667843739281<31> × 12967950356237506524625257589572120616290855806877047629652249726736719528602631785079368878205873<98> |