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Old 2008-02-02, 19:24   #5
davieddy
 
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"Lucan"
Dec 2006
England

2·3·13·83 Posts
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Here are the percentages of Mersennes factored by range:

0-15M: 63.54%
15M-17.5M: 62.59%
17.5M-20M: 62.87%
20M-25M: 63.04%
25M-30M: 62.67%
30M-35M: 62.64%
35M-40M: 62.41%

It is hardly over-extrapolating to guess that from 40M-80M
the percentage factored before LL testing takes place will be
close to 62.5% (5/8).

The corresponding % we have got for 42M-43M is 58.2%
which is significantly lower than expected.
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