Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 357: | \[{5^{357}-1\over4}\] | 31 × 239 × 379 × 409 × 1429 × 4999 × 19531 × 90271 × 317731 × 519499 × 466344409 × 654652168021<12> × 7497182681291140146079<22> × 788868477693980100643230089490226571<36> × 197540868424684226429492426708706489232853197834718440742140764809885712042308496715342794232198055831339832002412306144690704343281281<135> |