Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 268: | \[{15^{268}-1\over14}\] | 25 × 113 × 269 × 1609 × 4954919 × 93348019 × 21737518025925979<17> × 2628501058611905652954840361379<31> × 34454155184954549865168924228785385728941<41> × 193499262007937687337404242623313694903275193183714611<54> × 1644706561943793682049643760596930144672057309890166463201<58> × 245314672796372618020009747305047420045630640527245684764318904611312789121942143171528634781<93> |