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DAB
02-05-2013, 6:13pm
World?s largest prime number discovered -- all 17 million digits | Fox News (http://www.foxnews.com/science/2013/02/05/worlds-largest-prime-number-discovered/?intcmp=features)


If diamonds are a girl’s best friend, prime numbers are a mathematician’s.
And Curtis Cooper at the University of Central Missouri in Warrensburg has just found the biggest, shiniest diamond of them all.

As part of the Great Internet Mersenne Prime Search (GIMPS), a computer program that networks PCs worldwide to collectively hunt for a special type of prime number, Cooper discovered the largest prime number yet late last month: a beast with 17,425,170 digits.

The number -- 2 multiplied by itself 57,885,161 times, written mathematically as 257,885,161-1 -- is the first prime discovered in four years.

Though there is little mathematical value to finding a single new prime, these rare numbers are prized in their own right by some. "It's sort of like finding a diamond," Caldwell told New Scientist. "For some reason people decide they like diamonds and so they have a value. People like these large primes and so they also have a value."

You can see an abbreviated version of the new prime number, or download all 17,425,170 digits in a massive, 22MB text file.

Prime numbers, which are divisible only by themselves and one, have little mathematical importance. Yet the oddities have long fascinated amateur and professional mathematicians.

The first prime numbers are 2, 3, 5, 7, 11, and so on. The number 10 is not prime because it is divisible by 2 and 5, for example. There are an infinite number of primes: The curious or numerologically inclined can peruse a list of the first 50 million primes online.

Mersenne primes like Cooper’s were named for the French monk Marin Mersenne, who studied these numbers more than 350 years ago. The GIMPS project has discovered all 14 of the largest known Mersenne primes.
A Mersenne prime is of the form 2P-1, where the variable P is itself a prime -- making the Mersenne an elite sort of prime, a James Bond among spies. The first Mersenne primes are 3, 7, 31, and 127 corresponding to P = 2, 3, 5, and 7, respectively, the GIMPS website explains.

There are only 48 known Mersenne primes.


Read more: World?s largest prime number discovered -- all 17 million digits | Fox News (http://www.foxnews.com/science/2013/02/05/worlds-largest-prime-number-discovered/?intcmp=features#ixzz2K4MKDQWy)


CFOT mods can count to potato.

Datawiz
02-05-2013, 6:14pm
Someone found my pay stub. :D

Skia
02-05-2013, 6:16pm
When I took the Mod exam I was told there would be no math. :toetap:

Datawiz
02-05-2013, 6:20pm
When I took the Mod exam I was told there would be no math. :toetap:

And you still flunked.

DAB
02-05-2013, 6:21pm
When I took the Mod exam I was told there would be no math. :toetap:

they did all the math for you. you just have to memorize the number. go.

we'll check back in a few decades. :dance:

Skia
02-05-2013, 6:24pm
And you still flunked.

they did all the math for you. you just have to memorize the number. go.

we'll check back in a few decades. :dance:Yah know being a musician you'd think I'd do great with math.....I suck at it. My mind just can't bend around the concepts. :shrug:

DAB
02-05-2013, 6:25pm
i can remember all sorts of useless numbers...but you introduce me to a stranger and tell me their name....and in 5 minutes i've forgotten it.

DukeAllen
02-05-2013, 6:50pm
The only number I can remember is 69:leaving:

Skia
02-05-2013, 6:55pm
i can remember all sorts of useless numbers...but you introduce me to a stranger and tell me their name....and in 5 minutes i've forgotten it.

This country needs more mathematicians and scientists and less sales people.

OddBall
02-05-2013, 6:57pm
No warp drive...:bfd:

DAB
02-05-2013, 6:58pm
This country needs more mathematicians and scientists and less sales people.

and pay them well too.

i swear i get more emails for sales positions (nothing on my resume even hints at sales) than for real engineer positions (resume is full of engineering related stuff). :shrug:

OddBall
02-05-2013, 7:20pm
and pay them well too.

i swear i get more emails for sales positions (nothing on my resume even hints at sales) than for real engineer positions (resume is full of engineering related stuff). :shrug:

so sell some engineering stuff. :D

Mirroredshades
02-05-2013, 7:29pm
i can remember all sorts of useless numbers...but you introduce me to a stranger and tell me their name....and in 5 minutes i've forgotten it.

Me too Steve.

:seasix:

Skia
02-05-2013, 7:29pm
so sell some engineering stuff. :DHelp me get a position selling it. :yesnod:

DAB
02-05-2013, 7:37pm
Me too Steve.

:seasix:

:slap:

Datawiz
02-05-2013, 7:41pm
Me too Steve.

:seasix:

I forget their name before they finish talking to me. :willy:

Montehall
02-05-2013, 7:46pm
how are prime numbers being "discovered"? like "discovering" a continent that already had people living on it....

Oh, wait. I just discovered the number "257,885,162-1"

I'm gonna be rich.

DAB
02-05-2013, 7:48pm
how are prime numbers being "discovered"? like "discovering" a continent that already had people living on it....

they've always been there, just we have to find them and prove that they are prime.

MEANZ06
02-05-2013, 7:57pm
CFOT mods can count to potato.



http://i130.photobucket.com/albums/p275/meanz06/new%20album/1356390244689_zps416fd947.png


:D