Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 297: | \[{18^{297}-1\over17}\] | 73 × 23 × 199 × 991 × 16127 × 23761 × 34327 × 51217 × 253369 × 1464049 × 3611719 × 4464073 × 22785247 × 4893407785654797223<19> × 12042065697120681040605799<26> × 117206168731902676796790484884706056816111011068777<51> × 43218179143257685335945634122258399454692189487444516939988174344618988407649233<80> × 9030893326469416244034716691971704957190412315597115002533171352989056458587332116654364033688432478463749366860051043393720834234493333999<139> |