You know you're bored when....

[Pretender]

.....you write a program that finds all primes between 1 and 2.1 billion.


Anyone else?

 

[Mday]

or you posted the 3 threads i did.

 

[konichiwa]

...you post a thread on an internet bulletin board about how you created a program that finds all primes between 1 and 2.1 billion, instead of going to your local family psychiatrist.

 

[Isla]

Yeah, I was gonna say 'when you stay up too late and post wacky things on OT, like me tonight!"

 

[Duckers]

Pretender,

This afternoon I was trying to write a C++ program that could identify whether a number is prime or not!

anyway, this is what i was able to write; but couldn't completely get it to work; take a look at it:
( I assume you said that for some reason )


#include <iostream.h>
int main ()
{

int number;

cout<<&quot;Enter an integer: &quot;;
cin>>number;


for (int x=2; x <=100; x++){;

if ((number % x == 0) &amp;&amp; (x != number))
cout<<&quot;NOT Prime&quot;<<endl;

else
cout<<&quot;Prime&quot;<<endl;
}
return (0);
}

 

[Pretender]

actually when I was walking home I was thinking &quot;I wonder what the highest prime number found is so far&quot;...then I decided to write a program...I'll modify it to go beyond 2 billion later, but it'll take more work. If you want a copy of the code PM me.


Damn I need a life

 

[Killbat]

Clickomotron has a new scoring system. Look for the debut tomorrow.

 

[Pretender]

clickomotron?

 

[Killbat]

You'll have to wait 'till tomorrow, just like everyone else. It's the third 90min program, and it's a game this time.

[edit] I've said too much. Sleeping now.

 

[Farbio]

uh oh, killbat has a new program...somehow i sense that he will be banned soon and the forums will be much slower to load

 

[Engine]

>>&quot;I wonder what the highest prime number found is so far&quot;...

(2^6,972,593)-1

 

[Pretender]

Alright, I'll start looking from there. Damn this should be a distributed computing project, it'll probably take me like months just to try the next number after that.

 

[Engine]

Heh... it actually IS a distributed computing project. Not nearly as big as distributed.net or seti@home, but it's one of the oldest ones, as far as I know.

http://www.mersenne.org/prime.htm

 

[Chooie]

Ever wonder why people use Prime95 to burn in and test computers?

 

[Pretender]

Well, in my mind I'm still the computer genius who first though up using a computer to determine primes. So there

 

[Farbio]

yea, and in my mind pretender i'm an incredibly handsome stud that has women swooning w/ every step i take

















oh wait, that is me!

 

[Teatowel]

The highest prime number found so far has 150,000 digits, so Andrew Wiles says.

 

[Engine]

150,000 digits? The last Mersenne prime found was over 3 million, I believe.

 

[Teatowel]

um...I guess you may be right... the source I took that figure from was about 5 years old

 

[Engine]

Hehe
THat would explain it. GIMPS found that 3 million digit one about a year and a half ago, if I remember correctly.

 

[bigbootydaddy]

i was so bored (girl dumped me, maybe thatll be next post)
that i madedadymac.com