Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 388: | \[{5^{388}-1\over4}\] | 22 × 3 × 13 × 389 × 25997 × 29683 × 52769 × 261707 × 264811 × 547663 × 66477837920609<14> × 90130760102421063383<20> × 374962321852666418369<21> × 27430239803369083066006288929529<32> × 153159805660301568024613754993807288151489686913246436306439<60> × 4479616945301898660674760002387934391400228392792622816603378315956666439857992939659088517<91> |