Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 210: | \[{5^{210}-1\over4}\] | 2 × 32 × 72 × 11 × 29 × 31 × 43 × 61 × 71 × 127 × 181 × 211 × 379 × 421 × 449 × 521 × 631 × 1741 × 4201 × 7603 × 7621 × 19531 × 519499 × 1736701 × 5236141 × 15216601 × 85280581 × 4698932281<10> × 119461537021<12> × 21226783250214361<17> × 1354224218968567573270561<25> |