Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 453: | \[{7^{453}-1\over6}\] | 3 × 19 × 70056451 × 4356129541<10> × 115356256117<12> × 36076003832567<14> × 7633153937695309<16> × 206462520503013793561<21> × 2856349001315592319937<22> × 3488780190059117613426890577210829<34> × 2765290231620224523441852435124159094999555183731339173137659<61> × 3579370721752328493164020742051157862327446637094049214423061980171050733913623183112440035689319906302819845852449530185229968951899660708355669213649919535956792471114077210908916726599<187> |