This program calculates primenumbers quite fast.
Docs in english and german. You can save your 
own tables of primenumbers of a given range.
Option for testing 64-bit-integers.
New: Faster testing, output of found dividers,
     optimizations for 68040 and 68060

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 2903    4592  63.2% -lh5- 4f07 Dec 30  1999 Prime/Prime
[generic]                 4800   11841  40.5% -lh5- 219c Dec 30  1999 Prime/Prime.deu.guide
[generic]                 4326   10678  40.5% -lh5- de36 Dec 30  1999 Prime/Prime.eng.guide
[generic]                  260    1417  18.3% -lh5- 3670 Jan  2  2000 Prime/Prime_test.script
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         4 files   12289   28528  43.1%            Jan  3  2000