tables > lucas

Lucas Sequence

Defined with \(L_0=2\), \(L_1=1\), and \(L_n=L_{n-1}+L_{n-2}\) when \(n\geq2\). Related to the Fibonacci sequence.

Table

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Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>

* 4613: \[L_{4613}\] 29 × 1319 × 270191 × 304459 × 175931577229<12> × 13668696268789339<17> × 1291558265282875932019<22> × 477259254083625414478731167801906322667914843148241716863201576896891290560869179<81> × [2461516401624542270692987159619401376374283673899018444322239705310367853248942313193998373373608895325699056275084114795878015382570580491582884841332344983819926837276298191241190892339579492448313240406964891401601487720627054355662369775722200743663977303976478358075622098732843246809859139818450363824276744983237147588444863938194946790938412250891734233905066953585118140816190112287848719065970955732667887556967421151766665368437759709128102472972984790801006869343343326342870815618938580319777066822562089711593714412587159507799585797446731291705087475873501730555076257072646390324541344287560020595927952345290557793652815810870247596682402332766745172890155861167772567959762650232081803231094231061727843703793195304507531377537602003641254330524551719847243629061533753836283667524001869546819367788339<820>]

Index range: 4613 – 4613 << prev next >>