Possible Fibonacci Primes
 fibonacci (3) is prime
 fibonacci (4) is prime
 fibonacci (5) is prime
 fibonacci (7) is prime
 fibonacci (11) is prime
 fibonacci (13) is prime
 fibonacci (17) is prime
 fibonacci (23) is prime
 fibonacci (29) is prime
 fibonacci (43) is prime
 fibonacci (47) is prime
 fibonacci (83) is prime
 fibonacci (131) is prime
 fibonacci (137) is prime
 fibonacci (359) is prime
 fibonacci (431) is prime
 fibonacci (433) is prime
 fibonacci (449) is prime
 fibonacci (509) is prime
 fibonacci (569) is prime
 fibonacci (571) is prime
 fibonacci (2971) is prime
 fibonacci (4723) is prime
 fibonacci (5387) is prime
 fibonacci (9311) is prime
 fibonacci (9677) is prime
 fibonacci (14431) is prime
 fibonacci (25561) is prime
 fibonacci (30757) is prime
 fibonacci (35999) is prime
 fibonacci (37511) is prime
 fibonacci (50833) is prime
 fibonacci (81839) is prime
 fibonacci (104911) is probably prime
 fibonacci (130021) is probably prime
 fibonacci (148091) is probably prime
 fibonacci (201107) is probably prime
Program Statistics
Total program run time 3 years 117 days 3 hours 46 minutes 11 seconds
Current index as of the last update 356101
This programs runs on
FreeBSD 4.11 and uses the NTL library by
Victor Shoup which in
turn uses gmp
System uptime: 6:00PM up 22 days, 17:09, 0 users, load averages: 1.00, 1.00, 1.00
CPU: AMD Athlon(tm) XP 2400+ (2002.46MHz 686class CPU)
This page is no longer updated.
Last updated Sat, 13 May 2006 06:40:42 PM CDT
To learn more about prime numbers visit
The Prime Pages.
Recent updates:

June 9, 2004  Louis de Branges de Bourcia claims to have proven the Reimann Hyposthesis .

May 7, 2004  Upgraded the machine that generates this web page from a Celeron 566 to an Athlon XP 2400.

March 7, 2003  Modified the search algorithm to be faster, by taking advantage
of the first and third theorems on this
page.
Thanks to David Broadhurst for
pointing me to it, and Greg Falcon for explaining it to me.

February 15, 2003  T.D. Noe Recently found U(148091) to be PRP, and Henri Lifchitz recently found U(201107) to be PRP.
Thanks to
 David Broadhurst
 Chris Caldwell
 Greg Falcon
 Wilfrid Keller
 Henri Lifchitz
 Bouk de Water
for their help and feedback.