Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
105: | \[{5^{105}-1\over4}\] | 11 × 31 × 71 × 181 × 211 × 379 × 631 × 1741 × 4201 × 19531 × 519499 × 1736701 × 85280581 × 119461537021<12> × 21226783250214361<17> |