Largest known probable prime Lucas Cofactors (proper divisor of a Lucas number with a prime index)
|
Cofactor |
Digits |
When |
|---|---|---|
|
V(277273)/11090921 |
57940 |
11/2005 |
|
V(145703)/179214691 |
30442 |
10/2005 |
|
V(145193)/38621339 |
30336 |
10/2005 |
|
V(116593)/120790349 |
24359 |
06/2005 |
|
V(91873)/(3674921 . 193484539 . 167745030829) |
19175 |
06/2005 |
|
V(80761)/(23259169 . 24510801979) |
16861 |
06/2005 |
|
V(77417)/(1848717961 . 169842833791) |
16159 |
06/2005 |
|
V(68213)/(73397189 . 99325358579) |
14237 |
06/2005 |
|
V(51349)/(2156659 . 71375111 . 1457900809) |
10708 |
06/2005 |
|
V(49391)/(220185079 . 1355289041) |
10305 |
06/2005 |
|
V(45953)/(275719 . 16543081) |
9591 |
09/2004 |
|
V(43987)/175949 |
9188 |
09/2004 |
|
V(39769)/(2863369 . 6334883549) |
8295 |
09/2004 |
All 13 probable prime cofactors have passed a Miller-Rabin primality test in 10 randomly chosen bases (ispseudoprime test in PARI/GP). The 10 largest probable prime cofactors on this page are listed on Henri Lifchitz's Top 10000 PRPs page. Click here to view. All probable prime cofactors on this page were found by me except V(145703)/179214691 and V(145193)/38621339 were found by Jens Kruse Andersen.
Fibonacci and Lucas Factorizations
20 largest known prime Lucas cofactors (The Prime Pages)
Biography of Édouard Lucas
Main page
Last updated on January 31, 2012
Donovan Johnson