Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
83: | \[{6^{83}-1\over5}\] | 167 × 499 × 17597 × 41580677 × 80781507941<11> × 605274844997<12> × 2589238104153304205575487<25> |