Meet! Largest Known Prime Number around 22 Million Digits Long

Meet! Largest Known Prime Number around 22 Million Digits Long

The below story seems interesting for mathematicians who spend most of their time struggling with numbers. Dr. Curtis Cooper, from the University of Central Missouri, has found the largest-known prime number - written
(274207281)-1. It is around 22 million digits long and, if printed in full, would take you days to read. The discovery comes thanks to a collaborative project of volunteers who use freely available software called GIMPS (Great Internet Mersenne Prime Search) to search for primes.

I don't think there is need to explain, what are prime numbers? But, still let's define prime numbers as the numbers that can only be divided by itself and 1 without a remainder. Each one of us is surrounded by numbers, with good and bad superstitions have come out of them. Remarkably, most of these superstitious numbers are prime. The superstition that 13 is unlucky results in some hotels and office buildingsnot having rooms or floors labelled 13. And we all fear Friday 13th, especially sufferers of paraskevidekatriaphobia.

Do you know the reason, why 13th is called the unlucky number? Here's answer that at the last supper there was Jesus and the Twelve Apostles, with the 13th guest being Judas Iscariot who went on to betray Jesus. From more than 3,000 years, mathematicians have been searching for patterns in prime numbers. The Clay Mathematics Institute is offering a million dollars to anyone who can solve the "Riemann problem". This is a complex mathematics puzzle that emerged from the attempts by mathematicians to understand the intricacies of prime numbers.

Primes are strange and curious numbers. There are, for example, no primes between 370,261 and 370,373, or between 20,831,323 and 20,831,533. And the primes 13,331, 15,551, 16,661, 19,991 and 72,227 and 1,777,771 are all examples of palindromic numbers. These are numbers that remain the same when the digits are reversed. In 1956, psychologist George A Miller published a paper in The Psychological Review called The Magical Number Seven, Plus or Minus Two. In the paper, he talks about the prime number 7 'following him around'.

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