Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
181: | \[{13^{181}-1\over12}\] | 5431 × 23531 × 30047 × 423541 × 32598463 × 1244504930700295881445351<25> × 4456957638066283594576947293617<31> × 11303561412138014618753000377442772205214575894072680823<56> × 105414708059848016294528313082716229088364803720863753228989380701<66> |