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Old 2013-09-18, 21:40   #4
gd_barnes
 
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May 2007
Kansas; USA

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Serge,

I have a new long-term project for you. I see that you were the one who proved that 10^(2^23)+1 is composite way back in 2008. How about you test to see if 10^(2^24)+1 is composite? (16777217 digits)


Gary
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