Lucas Sequence
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 1668: | \[L_{1668}\] | 2 × 7 × 23 × 41143 × 42243409662449<14> × 116590239816783239939808689<27> × 9964487555100336998023298358033143<34> × 502953707610117148756334124600261734559417722378098081<54> × 110997404288165949555811153489845110957222910488403176792045424904031287<72> × 107526409265518444914499136856597975902560960630179218541222261225851970824562033110339375761732277604881795613883830767275914453289306374873047<144> |