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Forum: gophne 2018-01-02, 00:55
Replies: 272
Views: 36,559
Posted By ewmayer
@Serge: I heard the "predictions are hard" quip...

@Serge: I heard the "predictions are hard" quip attributed to Yogi Berra, not Bohr. Two names I never thought I'd see come up in the same sentence. :)

Here is a detailed investigation...
Forum: gophne 2017-12-29, 23:17
Replies: 272
Views: 36,559
Posted By ewmayer
Briefly reopening the thread for the benefit of...

Briefly reopening the thread for the benefit of our less-mathematical readers who may not see why the test in question is simply a base-2 Fermat pseudoprime test in disguise - start with the OP's...
Forum: gophne 2017-12-29, 06:41
Replies: 272
Views: 36,559
Posted By ewmayer
Yeah, we heard you the first million-and-six...

Yeah, we heard you the first million-and-six times. Try (n+2) = 2047 = 23*89 in your formula.
Forum: gophne 2017-12-29, 02:18
Replies: 272
Views: 36,559
Posted By ewmayer
No true negatives, either - but hey, who needs...

No true negatives, either - but hey, who needs all that negativity, it's harshing the holiday spirit, and stuff.
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