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primes

Interesting Numbers- I. Largest Prime Numbers

Thursday, February 10th, 2011 19:05 / Leave a Comment

What is a Prime Number?

An integer, say p , [ \ne {0} & \ne { \pm{1}} ] is said to be a prime integer iff its only factors (divisors) are \pm{1} & \pm{p} .

As?

Few easy examples are:
\pm{2}, \pm{3}, \pm{5}, \pm{7}, \pm{11}, \pm{13} …….etc…this list increases upto infinity & mathematicians are trying to find the larger one than the largest, because primes numbers/integers are not symmetrical (as any one cannot guess the next prime after one.) As of now the biggest prime number found is (probably) M-47 , called as Mersenne 47. This has an enormous value of 2^{43112609} -1 . It is very hard to write it on paper because it consists of 12978189 digits.
»M47 was Invented in 2008. (more…)

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