- 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 - fibonacci (
**604711**) is**probably**prime

Current index as of the last update 697441

This programs runs on
FreeBSD 11.1 and uses the NTL library by
Victor Shoup which in
turn uses gmp

System uptime: 3:00AM up 77 days, 5:32, 0 users, load averages: 1.30, 1.24, 1.20

CPU: AMD Athlon(tm) Dual Core Processor 5050e (2618.50-MHz K8-class CPU)

This page is updated on the hour.

Last updated Mon, 17 Feb 2020 03:00:00 AM CST

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

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