Base 21 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 358: | \[{21^{358}-1\over20}\] | 2 × 11 × 359 × 6803 × 12889 × 2027713 × 241072547 × 17550120663287<14> × 28739902275014980163546625880652015331955019287832976374361568207195638266664469886412815364734295860251332877<110> × 4653849070153408649951413909561827334268434279713859073327066819640634253479106720789945017525332426399319640897<112> × 14233403618561033523884429761084540840674399652061011551766124652199935296466292944900670477211463780231910895682219432463519381475588039231467503582669851031150958257601350051160759744668086947367624416719076631<212> |