Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 384: | \[{28^{384}-1\over27}\] | 3 × 5 × 13 × 17 × 29 × 97 × 157 × 193 × 271 × 757 × 6529 × 7321 × 9473 × 9601 × 47221 × 59809 × 196993 × 614657 × 836609 × 1552513 × 1750913 × 2012449 × 4338337 × 7734913 × 13430849 × 33806737 × 51605161 × 168542177 × 365764369 × 22223646961<11> × 637975560961<12> × 2716827163186049<16> × 72183193582863809<17> × 1344001595696204161<19> × 135266433293390919717121<24> × 292157123117644992355969<24> × 1104464421286829083965313<25> × 33056264688182274910972033<26> × 20373094654699866379529360122950128475486289921<47> × 904868753742115966158700311208476476672349529421569<51> × 99662267684870583291151893717396738643244980091462482734540644023855954888800237783087694913660226905235225613517786533907044987853558363630713238615765457793<158> |