5,000,000,000!

Faskalia · March 2005

Another way to axpress this reall long number:

exp(1.066635187*10^11)

edit: Wheres my COOKIE

Owen1 · March 2005

use standard index...

Rellix · March 2005

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (im lost @ Mar 4 2005, 09:54 AM)</td></tr><tr><td id='QUOTE'> </div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Rellix @ Mar 4 2005, 12:26 AM)</td></tr><tr><td id='QUOTE'> I stuck it in the windows calculator...it says itl take a long time, so lets see how long a time that is! </td></tr></table><div class='postcolor'>
I tried that, but after the fifth alert saying "This operation will take a long time. Do you want to continue?" (about once a minute), I decided it wasn't worth it.  </td></tr></table><div class='postcolor'> 
Im gonna do it overnight.

tuemmykids · March 2005

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Rellix @ Mar 4 2005, 08:04 AM)</td></tr><tr><td id='QUOTE'> </div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (im lost @ Mar 4 2005, 09:54 AM)</td></tr><tr><td id='QUOTE'> </div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Rellix @ Mar 4 2005, 12:26 AM)</td></tr><tr><td id='QUOTE'> I stuck it in the windows calculator...it says itl take a long time, so lets see how long a time that is! </td></tr></table><div class='postcolor'>
I tried that, but after the fifth alert saying "This operation will take a long time. Do you want to continue?" (about once a minute), I decided it wasn't worth it. </td></tr></table><div class='postcolor'>
Im gonna do it overnight.  </td></tr></table><div class='postcolor'> 
But who will keep clicking on continue?

Gwahir · March 2005

I could probably throw a class together to do it, but if your estimates are correct, the hard drive thrashing would be unbelievable.

J_D_W · March 2005

Its 50 billion or 5 billion.

Rellix · March 2005

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (tuemmykids @ Mar 4 2005, 01:22 PM)</td></tr><tr><td id='QUOTE'> </div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Rellix @ Mar 4 2005, 08:04 AM)</td></tr><tr><td id='QUOTE'> </div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (im lost @ Mar 4 2005, 09:54 AM)</td></tr><tr><td id='QUOTE'> </div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Rellix @ Mar 4 2005, 12:26 AM)</td></tr><tr><td id='QUOTE'> I stuck it in the windows calculator...it says itl take a long time, so lets see how long a time that is! </td></tr></table><div class='postcolor'>
I tried that, but after the fifth alert saying "This operation will take a long time. Do you want to continue?" (about once a minute), I decided it wasn't worth it. </td></tr></table><div class='postcolor'>
Im gonna do it overnight. </td></tr></table><div class='postcolor'>
But who will keep clicking on continue?  </td></tr></table><div class='postcolor'> 
Im going on the asumption that since it continues to use 100% CPU while its got the message up that its still continuing to calculate it.

kill4thrills · March 2005

duh,

5,000,000,000! = 5,000,000,000!

the answer is not an infinite number. i win.

Verthandi · March 2005

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Rellix @ Mar 5 2005, 01:12 AM)</td></tr><tr><td id='QUOTE'> Im going on the asumption that since it continues to use 100% CPU while its got the message up that its still continuing to calculate it.  </td></tr></table><div class='postcolor'> 
I just tested it (using 30000!), it does indeed continue working in the background. Sleep easy tonight (and perhaps for many nights to come), seeing as to how long this process might take... <img src='http://www.unknownworlds.com/forums/html/emoticons/biggrin-fix.gif' border='0' style='vertical-align:middle' alt='biggrin-fix.gif' />

moultano · March 2005

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Verthandi @ Mar 4 2005, 12:30 PM)</td></tr><tr><td id='QUOTE'> </div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Rellix @ Mar 5 2005, 01:12 AM)</td></tr><tr><td id='QUOTE'> Im going on the asumption that since it continues to use 100% CPU while its got the message up that its still continuing to calculate it. </td></tr></table><div class='postcolor'>
I just tested it (using 30000!), it does indeed continue working in the background. Sleep easy tonight (and perhaps for many nights to come), seeing as to how long this process might take... <img src='http://www.unknownworlds.com/forums/html/emoticons/biggrin-fix.gif' border='0' style='vertical-align:middle' alt='biggrin-fix.gif' />  </td></tr></table><div class='postcolor'> 
Suppose it takes a nanosecond per calculation. Calculating 5000000000! would take much much longer than your lifetime doing it naively. Just look at the order of magnitude.

Rellix · March 2005

More fun before hand:

5,000,000,000 = 625,000,000 bits = 610351.5625Kb = 596.0464478Mb

Thats the space required to store the numbers that are to be multiplied
<img src='http://www.unknownworlds.com/forums/html/emoticons/biggrin-fix.gif' border='0' style='vertical-align:middle' alt='biggrin-fix.gif' />

Soo there goes a stick of RAM....

moultano · March 2005

If for some reason you were actually intending on calculating this whole thing, I suspect you could get significant speadup by exploiting the prime factorization of the numbers you are multiplying. Its easy to count the multiples of every prime, which leaves only to find the exponent of each prime in the prime factorization of every number. Since you are doing this by generating rather than analysis, it should be fairly quick. Then once you have your factorial expressed as some number of primes raised to exponents, you can use the repeated squares method of exponentiation to do your multiplication.

I haven't done the analysis to see if this would in fact be faster, but my intuition says yes.

Rellix · March 2005

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Rellix @ Mar 4 2005, 06:41 PM)</td></tr><tr><td id='QUOTE'> More fun before hand:

5,000,000,000 = 625,000,000 bits = 610351.5625Kb = 596.0464478Mb

Thats the space required to store the numbers that are to be multiplied
<img src='http://www.unknownworlds.com/forums/html/emoticons/biggrin-fix.gif' border='0' style='vertical-align:middle' alt='biggrin-fix.gif' />

Soo there goes a stick of RAM....  </td></tr></table><div class='postcolor'> 
Wait thats wrong isnt it?

that would be 5billion 1 digit numbers......

Align · March 2005

If I had that much money....

Well, I'd probably turn into a black hole from the sheer mass, but hey. I'd be mind-numbingly rich!

Testament · March 2005

Anyone got a secondary PC to run the calculation on for a few days? <img src='http://www.unknownworlds.com/forums/html/emoticons/tounge.gif' border='0' style='vertical-align:middle' alt='tounge.gif' />

im_lost · March 2005

Why are we trying to find it? Someone already asked that, and no answer was given.

Mantrid · March 2005

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (im lost @ Mar 4 2005, 04:55 PM)</td></tr><tr><td id='QUOTE'> Why are we trying to find it? Someone already asked that, and no answer was given.  </td></tr></table><div class='postcolor'> 
"Because its there."

Umbraed_Monkey · March 2005

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (im lost @ Mar 4 2005, 07:55 PM)</td></tr><tr><td id='QUOTE'> Why are we trying to find it? Someone already asked that, and no answer was given.  </td></tr></table><div class='postcolor'> 
read first post omg

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (first post)</td></tr><tr><td id='QUOTE'>First person who can give me a non-infinite answer wins a cookie.
</td></tr></table><div class='postcolor'>

Rellix · March 2005

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Testament @ Mar 5 2005, 12:43 AM)</td></tr><tr><td id='QUOTE'> Anyone got a secondary PC to run the calculation on for a few days? <img src='http://www.unknownworlds.com/forums/html/emoticons/tounge.gif' border='0' style='vertical-align:middle' alt='tounge.gif' />  </td></tr></table><div class='postcolor'> 
Now you suggest that....anyway i forgot to start it last night....

Black_Viper · March 2005

Is it a <a href='http://www.googolplex.com/' target='_blank'>Googol</a>? Maybe a <a href='http://www.googolplexian.com/' target='_blank'>Googolplexian</a>?

Omega_Death · March 2005

For clarification I was bored one night and it popped into my head, hey I wonder if we could figure out 5 billion factorial, this isn't homework, it isn't anything for school (I'd hate to see the **** professor who assigned that one), it was just a child of boredom. BTW how is the computing going Rellix? Been a while, since the forums have been down.

Rellix · March 2005

Well i started it on my extra PC on saturday night, when i checked on sunday morning before skiing it had crashed, from the looks of it right after i turned off the moniter judging where the mouse was.... so im gonna start it again this weekend.

5,000,000,000!

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