Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 517: | \[{8^{517}-1\over7}\] | 23 × 89 × 2351 × 4513 × 12409 × 82721 × 599479 × 13264529 × 387348809 × 4375578271<10> × 646675035253258729<18> × 1292800939332382943<19> × 270374114136830957955241<24> × 26302895729179572365768002599674239<35> × 5055472900700718446998992178766514487953008646383<49> × [1249353004049436574734334122644816949433752752162320533185569514035250180162807759076150232288187439575186800117949021171804419767977806750647967640915241353611713705181740270551239552357928368346334485153506889694401573584735615929525252009954720428137565212441971295951999<274>] |