Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 194: | \[{5^{194}-1\over4}\] | 2 × 3 × 389 × 29683 × 261707 × 264811 × 547663 × 90130760102421063383<20> × 27430239803369083066006288929529<32> × 153159805660301568024613754993807288151489686913246436306439<60> |