Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 226: | \[{31^{226}-1\over30}\] | 25 × 227 × 2713 × 11527 × 26669 × 67801 × 103137361 × 51677116609<11> × 60124116791<11> × 438407124007<12> × 1055898946867729<16> × 6555482051012971<16> × 10693692662134337<17> × 146745110362406117<18> × 603381002763102412489529889101585796017476365695183<51> × 14757215047117327622283734058394333691061099750676669545336951843347<68> × 66662536191598938854817414473947493746284932527286427494467290603681496730818510667710681027<92> |