Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 506: | \[{15^{506}-1\over14}\] | 24 × 232 × 47 × 67 × 463 × 829 × 1013 × 2333 × 6257 × 8537 × 31741 × 81421 × 825287 × 2136839 × 398612633 × 509106841 × 3325963807 × 3549551867 × 16696423811<11> × 23504771357<11> × 3046462151831565769<19> × 6111428874683096933<19> × [7073888769072029864301020286842234903525429715303106499874445123158335927729555385330297929531665949504787840654656350401770590047752645307218310441359615975371935645072935535378956938825396108010574672162943047239<214>] × 1239962192172165615492766632490490067418711583415060001981818742309696768152328011783284204524556685615416568646794588246300782233023207072737147379311751825469685370880040155500097006768383471458728546772122342272147818578851902249939003<238> |