Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 807: | \[{4^{807}-1\over3}\] | 3 × 7 × 11299 × 2771239 × 13822297 × 502502761 × 369345192417701052571<21> × 424255915796187428893811<24> × 18630342702315826557199328264881<32> × 466047024627224480211076768171369<33> × 745280352191786358209397071708329198285057832384965565161<57> × 8277389085448640628497252206869143392591458616173329257239146349617282131<73> × 68625988504811774259364670661552948915363901845035416371912463477873783063<74> × 92305417851236773758187001276904991441004832226292982967386157974676884358296302489037698908789673402780112396877168012932339190104672007306077769<146> |