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Old 2016-01-29, 03:19   #3
Dubslow
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"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

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Most or all of those questions have been answered at some point in time in this thread: http://mersenneforum.org/showthread.php?t=20372

Of course, I couldn't tell you *where* in the thread the answers lie. Perhaps madpoo would have better luck refreshing our memories.

Suffice it to say, as Mark indicates, quad checks are surprisingly common, I think more than 10 per 1M exponent range, possibly even up to a hundred.

I think the most mismatches is somewhere around 6, though I may be recalling incorrectly.
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