Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
303: | \[{5^{303}-1\over4}\] | 31 × 126463111 × 5937018283241<13> × 3434487311396589821473854121<28> × 483593153887747265029536907421<30> × 897449797190508611732321830427288714681382628177991026939<57> × 442186171761555778273239995709586746484098102327396108135444422984734682149<75> |