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Old 2005-12-06, 19:43   #2
John Renze
 
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Nov 2005

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Quote:
Originally Posted by MS63
Would it possible set the LL test running twice on the same prime candidate starting at each end, as it were, and meeting somewhere in the middle?
No it wouldn't. It's a lot harder to take the square root than it is to square, which is what you would have to do to run LL backwards.

John
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