Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 247: | \[{14^{247}-1\over13}\] | 13 × 157 × 607127 × 29914249171<11> × 459715689149916492091<21> × [56000444730182701690007433727305855171326211930945227810017049853517273347209463914909609421234314928258956441380707175891014895709712712082959273781803553950644751434837870350482931898759527517206413781560596891974443795060130803143468507653<242>] |