Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 419: | \[{5^{419}-1\over4}\] | 839 × 3676736043047175259<19> × 72898712900545938884496308172168836533702575641<47> × 253223724619264984937512323106215870334054372644006216919829591185855496480749<78> × 324282236206888027126179271937713666677747848532697220523567819276639685793347237204977703722132529149697495607804912703160907653459107842293207759<147> |