Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 134: | \[{15^{134}-1\over14}\] | 24 × 4954919 × 93348019 × 21737518025925979<17> × 2628501058611905652954840361379<31> × 34454155184954549865168924228785385728941<41> × 193499262007937687337404242623313694903275193183714611<54> |