Largest+Prime+Number

=__**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 ||  ||

//**Video About the Largest Prime Number**//
UCLA researchers found largest known prime number: URL: 

Person explaining about prime numbers: URL: 

**Information**
"Prime Number." Wikipedia, the Free Encyclopedia. 14, January 2010. Web. 15, January 2010. 

"Largest Known Prime Number." Wikipedia, the Free Encyclopedia. 11, January 2010. Web. 15, January 2010. 

**Information + Chart**
"The Largest Known Primes." The Top Twenty. November 2009. Web. 15, January 2010. 

**Photo**
Photograph. Photographers Direct. Web. 15, January 2010. 

**Video**
"UCLA Researchers Find Largest Known Prime Number." Youtube. Web. 15, January 2010. 

"Prime Numbers- The Sieve of Eratosthenes." Youtube. Web. 15, January 2010. 