Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 212: | \[{19^{212}-1\over18}\] | 23 × 5 × 107 × 181 × 1697 × 18869 × 104095533511<12> × 323930821687153<15> × 2551089855701675251204783<25> × 37334173314913678536474517<26> × 210146007928707977384770009<27> × 135818088892456368195992838307<30> × 304608770494258116955904675708809486196490095946728010907908555262777369830710484902087388474935136518254221884600714161059277<126> |