Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 238: | \[{5^{238}-1\over4}\] | 2 × 3 × 29 × 239 × 409 × 449 × 1429 × 2381 × 3061 × 4999 × 19531 × 25229 × 4172141 × 41540861 × 466344409 × 7497182681291140146079<22> × 788868477693980100643230089490226571<36> × 60433492605929799024858062086345509864222351309382109<53> |