Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 215: | \[{23^{215}-1\over22}\] | 173 × 431 × 92107 × 292561 × 22412498614811426470721<23> × 102219917850387811990824636930475340357519336809223<51> × 583450232640866203257795091070099135854966428872301472952607273425642939967664467538925343021235803245352176430437252463587466323491419355956364742562166857671023480203840370084369721256968410804607240431<204> |