Largest Prime Number


What is the Prime Number?



First, the prime number is a natural number that is divided by exactly two numbers, which is one and itself.

Examples of prime number:
2, 3, 5, 7, 11, 13, 17,
19, 23, 29, 31, 37,41,
43, 47, 53, 59, 61,67,
71, 73, 79, 83, 89, 97, 101, ....

The prime number is almost always is the Mersenne prime number, which is in the format of
two to the power of some number minus/ plus one (243,112,609 − 1).



How is the Largest Prime Number Found?



The largest prime number have been changed over many years by the improvement of the technology.

It for now has been discovered in August 23, 2008.
It was found during the project called “Great Internet Mersenne Prime Search" (GIMPS).

The largest prime number can change again when other person or a group finds a larger prime number.



What is the Largest Prime Number?



The largest prime number in the world, for now, is two to the power of 43112609 minus one ((2^43112609)-1).

The largest prime number, as of 2010, has about 13 million decimal digits.
It has 12, 978, 189 digits.

It is also known as the 47th Mersenne Prime.

The Top Ten Largest Known Prime Numbers:


rank
prime
digits
who
when
reference
1
243112609-1
12978189
G10
2008
Mersenne 47??
2
242643801-1
12837064
G12
2009
Mersenne 46??
3
237156667-1
11185272
G11
2008
Mersenne 45??
4
232582657-1
9808358
G9
2006
Mersenne 44??
5
230402457-1
9152052
G9
2005
Mersenne 43??
6
225964951-1
7816230
G8
2005
Mersenne 42?
7
224036583-1
7235733
G7
2004
Mersenne 41?
8
220996011-1
6320430
G6
2003
Mersenne 40?
9
213466917-1
4053946
G5
2001
Mersenne 39
10
19249·213018586+1
3918990
SB10
2007



Photo of the Largest Prime Number




external image pd2068061.jpg


Video About the Largest Prime Number



UCLA researchers found largest known prime number:
URL: <http://www.youtube.com/watch?v=Memk877qX8A>

Person explaining about prime numbers:
URL: <http://www.youtube.com/watch?v=9m2cdWorIq8>





Work Cited


Information


"Prime Number." Wikipedia, the Free Encyclopedia. 14, January 2010. Web. 15, January 2010. <http://en.wikipedia.org/wiki/Prime_number>

"Largest Known Prime Number." Wikipedia, the Free Encyclopedia. 11, January 2010. Web. 15, January 2010. <http://en.wikipedia.org/wiki/Largest_known_prime_number>

Information + Chart


"The Largest Known Primes." The Top Twenty. November 2009. Web. 15, January 2010. <http://primes.utm.edu/largest.html>

Photo


Photograph. Photographers Direct. Web. 15, January 2010. <http://www.photographersdirect.com/buyers/stockphoto.asp?imageid=2068061>

Video


"UCLA Researchers Find Largest Known Prime Number." Youtube. Web. 15, January 2010. <http://www.youtube.com/watch?v=Memk877qX8A>

"Prime Numbers- The Sieve of Eratosthenes." Youtube. Web. 15, January 2010. <http://www.youtube.com/watch?v=9m2cdWorIq8>