Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 389: | \[{7^{389}-1\over6}\] | 1035744587833<13> × 354364364887111871<18> × [25135272624259801780889522756412088408387172462747338546853755844932926225165110681261117038882475134239241724233601134703931835268190509012508607105366749279395507345324073384018861691523114735608235626831825932978113947511759983717980810935695128143982708610407915806581751820032299510258416849607<299>] |