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Old 2010-06-15, 10:39   #2
10metreh's Avatar
Nov 2008

2·33·43 Posts

This bug is known. There used to be a "Set prime" button which was given to certain (trusted) users of the DB. It was meant to be used on very large numbers that had been proved prime. However, it obviously got given to someone with malicious intents by mistake, and that person used it to set various composite numbers prime. The "Set prime" button was removed.
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