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Old 2003-12-21, 10:57   #1
andi314
 
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Nov 2002

2·37 Posts
Default primility testing

I hope somebody can help me:

I have a number ( approx. 15-20 digits) and i try to trial factor it to p(1000)=7919
and start afterwards a fermat test ( a^p mod p=a) with the bases a=2,3,5,7.

Can i then say that the tested number is prime???
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