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**anonimnystefy****Real Member**- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,016

Hi bobbym

I think we should stop chatting because it is abother persons thread, and also, we have already reached that magical point where I have no idea what you are talking about.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

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**jacks****Member**- Registered: 2012-11-21
- Posts: 126

Yes Bobbym answer Given is

would you like to explain it to me. Thanks

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 105,703

Hi;

I know of nothing better than computing the divisors and then checking mod 4 for each one.

I have been researching the problem for something else but have not found anything.

Just finished reading 8 books on number theory, found 3 new was to compute the Jacobi symbol but did not find a shortcut for yours.

*Last edited by bobbym (2013-02-27 12:01:44)*

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.****No great discovery was ever made without a bold guess. **

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