Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 399: | \[{15^{399}-1\over14}\] | 7 × 43 × 241 × 4789 × 79801 × 149759 × 229027 × 780179 × 1743463 × 4272113 × 292582141 × 2817034275427<13> × 370649274902657<15> × 18536510212629000707955547<26> × 374509801816506294174785493421<30> × 2181105157226630896811634572981263<34> × 6969521913939651515520634098282421<34> × 8989060546826028227815418496714456884452802834213083<52> × 812512626361207256583960966637721387768063401991358505045902059435521097732899010701465301424223964374380139135399217655007083839541345890011107252030951165544610699406687226559400226930898209688442271546923889085689<216> |