Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 875: | \[{4^{875}-1\over3}\] | 11 × 31 × 43 × 71 × 127 × 251 × 281 × 601 × 1051 × 1801 × 4051 × 39551 × 86171 × 110251 × 122921 × 558251 × 10022251 × 60816001 × 229668251 × 269089806001<12> × 347833278451<12> × 34010032331525251<17> × 4710883168879506001<19> × 725688486718330087751<21> × 5519485418336288303251<22> × 535347624791488552837151<24> × 511937190014372102141784257057292201840312001<45> × 1448724971925222342889675500698846356483820995550036783261953135108670064951365775570094705629617735073335209377682635445001<124> × 5718039518555007627381367067387326475271823586132366619744957152669711690408574488925071259305573647810815919209500241631788149240057412005278225084826899525751<160> |