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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,657

It would be interesting to see one, though.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,485

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?

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

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,485

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
- Posts: 15,657

It has around 3.6*10^12 digits.

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

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,485

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
- Posts: 15,657

What mantissa?

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
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1.342*10^20, the 1.342 is the mantissa.

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

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,657

What about it?

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

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
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It is 3.63something.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,485

Hi;

Those are the first 3 digits of the exponent.

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

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,657

Hi bobbym

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,485

Hi;

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

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

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,657

3.6 ?

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

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

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

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
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I am getting that as the mantissa.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,485

May I see your full answer?

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

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,657

Hi bobbym

This is what W|A gives.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
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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.

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

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
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W|A won't tell me.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
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That is the point! Wolfram can not do 3^3^3^3. But we can still get an answer!

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

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,657

Numerical analysis?

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
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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.

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

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,657

Let me see how youwould do that, will you?

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