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Old 2004-04-26, 19:40   #7
geoff
 
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Mar 2003
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I was thinking about doing it one exponent at a time, but you could also do all TF to 2^68, then P-1 stage 1 and 2, then TF to 2^70. That would probably work out a bit faster than doing all the TF first because a lot more factors will be found in P-1 than in the last 2 bits of TF.
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