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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,606

It would be interesting to see one, though.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
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An algorithm with a O(n^n^n^n)?

2^2^2^2 = 65536

Do you have any idea what 3^3^3^3 is?

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**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**anonimnystefy****Real Member**- From: The Foundation
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Yes, I do. But imagine an algorithm of complexity O(G_n) where G_n is the Graham's number except that it uses n instead of 3 everywhere.

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**bobbym****Administrator**- From: Bumpkinland
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Forget that Graham's number kaboobly doo, what is your estimate of 3^3^3^3?

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
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It has around 3.6*10^12 digits.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
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And the mantissa?

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
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What mantissa?

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**bobbym****Administrator**- From: Bumpkinland
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1.342*10^20, the 1.342 is the mantissa.

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**anonimnystefy****Real Member**- From: The Foundation
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What about it?

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**bobbym****Administrator**- From: Bumpkinland
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What is the mantissa?

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**anonimnystefy****Real Member**- From: The Foundation
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It is 3.63something.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
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Hi;

Those are the first 3 digits of the exponent.

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**anonimnystefy****Real Member**- From: The Foundation
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Hi bobbym

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
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Hi;

Yes, I know but what are the front digits. The mantissa!

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
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3.6 ?

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**bobbym****Administrator**- From: Bumpkinland
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Hi anonimnystefy;

Those are the front digits of the exponents not the mantissa.

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**anonimnystefy****Real Member**- From: The Foundation
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I am getting that as the mantissa.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
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May I see your full answer?

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**anonimnystefy****Real Member**- From: The Foundation
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Hi bobbym

This is what W|A gives.

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**bobbym****Administrator**- From: Bumpkinland
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That is the number of digits. That is the same as the exponent of the answer. But it is not the mantissa of the answer.

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**anonimnystefy****Real Member**- From: The Foundation
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W|A won't tell me.

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**bobbym****Administrator**- From: Bumpkinland
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That is the point! Wolfram can not do 3^3^3^3. But we can still get an answer!

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
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Numerical analysis?

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**bobbym****Administrator**- From: Bumpkinland
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Yes and any other branch of math! In a school problem you can only use the material you just learned. Usually just the last chapter of the textbook covered. In the real world there are no bounds! Any technique that gets an answer is good.

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
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Let me see how youwould do that, will you?

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