Giuga numbers: Difference between revisions
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=={{header|Java}}== |
=={{header|Java}}== |
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Algorithm uses the mathematical facts that a Giuga number must be square-free and cannot be a semi-prime. |
Algorithm uses the mathematical facts that a Giuga number must be square-free and cannot be a semi-prime. |
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up to approximately 147,000 in around 20 milliseconds. |
up to approximately 147,000 in around 20 milliseconds. |
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<syntaxhighlight> |
<syntaxhighlight lang="java"> |
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import java.util.ArrayList; |
import java.util.ArrayList; |
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import java.util.Collections; |
import java.util.Collections; |
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