Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 786: | \[{4^{786}-1\over3}\] | 3 × 5 × 7 × 13 × 263 × 787 × 1049 × 12577 × 14149 × 33013 × 39301 × 342697 × 1994869 × 4744297 × 36093121 × 51118297 × 58352641 × 269665073 × 642811237 × 1865269177 × 2745098189 × 810791440841<12> × 2203107506077035781<19> × 12450751815271172041<20> × 308544695409769427309<21> × 726143484017702822117388229<27> × 182331128681207781784391813611<30> × 7237497065445543055003057643920459<34> × 148872056543513628821642952172163869<36> × 10350794431055162386718619237468234569<38> × 60248391245337620758268807423625926689<38> × 433685074806886298028919267117655888254843<42> × 9833304614455302578430964280893955512223415028355534287<55> |