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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>

2891: \[L_{2891}\] 29 × 709 × 8969 × 336419 × 545161 × 4307591 × 599786069 × 1604715464801<13> × 33637840386809<14> × 1457370617118105409651<22> × 180249374207654999655624116221570357240692774273973649<54> × 12307608044792706858154962405081060777732870512919135151665701416544457566813188219193506462020529001102520448286631162064082601447603987432895442125419867444481387260519831383925320974267199405964452824264782089851907182936541080843414472176984789020614589513690669840153113867860838687170971817622718838585585082849415751980502074031699455330406771183819539302309384747734622339693314819517017114651309811751254077530692410066418151454503789870020180246533279329446461<470>

Index range: 2891 – 2891 << prev next >>