Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 237: | \[{15^{237}-1\over14}\] | 241 × 317 × 43609 × 289141 × 16693066087<11> × 128328713743<12> × 867423636529<12> × 8546248653301<13> × 669823018992293361796162097903541907<36> × 635202924304143926394929553206270861232915983823448379207983060226587253234146827953<84> × 5942907372736699562063092047506968135974438229218604241964764555870325239782159066204187454641023<97> |