Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 496: | \[{5^{496}-1\over4}\] | 24 × 3 × 13 × 17 × 313 × 1303 × 1861 × 11489 × 21207101 × 28086211607<11> × 1284020836753<13> × 625552508473588471<18> × 8124604717965111529<19> × 102651353523520067851969<24> × 557639293920224377596990976991388831169<39> × 751114601164400963558298106851275193494354988352771579238818981647550964507812890001<84> × 790450154755619157376613015946858388883831801801547007731871765274357243854208801159194280210861245252105840761661393<117> |