Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 481: | \[{13^{481}-1\over12}\] | 53 × 1481 × 2887 × 140453 × 264031 × 1803647 × 3938033581 × 67495678093<11> × 4287755796749<13> × 17356467303449<14> × 31964044249933<14> × 28476004816139204850495289113509<32> × [31028240229076224594714695166002479579169365546585747752371379447504319877563383589330666449828866508640180104366978946731680733966965221334529827907117844073404659226430519015619965648466799<191>] × [630683303599718522890362998968891761093398129720169294368769862786156252793709427483274850051321594523767168588010708209700881379648161173317750281822497359485598173111275465598171943107325226837280241518091851609298928191696109<228>] |