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
 fibonacci (397379) is probably prime
 fibonacci (433781) is probably prime
 fibonacci (590041) is probably prime
 fibonacci (593689) is probably prime
Program Statistics
Total program run time 1 years 87 days 11 hours 27 minutes 37 seconds
Current index as of the last update 600359
This programs runs on
FreeBSD 11.1 and uses the NTL library by
Victor Shoup which in
turn uses gmp
System uptime: 2:00PM up 81 days, 9:19, 0 users, load averages: 1.24, 1.17, 1.13
This page is updated on the hour.
Last updated Thu, 25 Apr 2019 02:00:00 PM CDT
To learn more about prime numbers visit
The Prime Pages.
Recent updates:

January 9, 2018  Fixed some broken links, and added new ones.

January 7, 2018  Restarted the program from scratch on a faster computer.

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
(now found at 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.
Related Pages