Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 275: | \[{7^{275}-1\over6}\] | 1123 × 2551 × 2801 × 293459 × 31280679788951<14> × 2429297864813474051<19> × 5457586804596062091175455674392801<34> × 13108478445679585187945846562792720732451<41> × 152254207931524870640907264181257222395351<42> × 2157644074550275307484702004222152061719537437027830110852488340087151<70> |