Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 393: | \[{5^{393}-1\over4}\] | 31 × 2621 × 23928199 × 34720241 × 344313589 × 16815642611861<14> × 250805666433416532678429525124977090318975999001796354124089<60> × 3275262323842759491144568903593811836020835083160675552849533185921<67> × 38599278727799758762827884169021535023276192085755949246058066094959324395874686038484382260938293077401109<107> |