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On Jan. 25, 2013, the largest known Prime number, 257,885,161-1, was discovered on Great internet Mersenne Prime Search (GIMPS) volunteer Curtis Cooper's computer. The new prime number, 2 multiplied by itself 57,885,161 times, less one, has 17,425,170 digits.

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Q: What is the longest known prime number?
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Related questions

What number does the longest prime number end in?

As of 2015, the longest prime number known ends in 1.


How long is the longest prime number?

The largest known prime number is 17,425,170, although technically, there is no largest possible prime number. To this day, mathematicians are still searching for higher prime numbers.


What is the longest prime factorization string for 239?

There is only one prime factorization string for each number, so there is not a "longest" one. Since 239 is a prime number, its prime factorization is 239.


The longest string of factors for a number?

The prime factorization.


What is the longest prime number?

On Jan. 25, 2013, the largest known prime number, 257,885,161-1, was discovered on Great Internet Mersenne Prime Search (GIMPS) volunteer Curtis Cooper's computer. The new prime number, 2 multiplied by itself 57,885,161 times, less one, has 17,425,170 digits.


What is the longest factor string of a number called?

The prime factorization


What is the worlds longest Prime number?

On Jan. 25, 2013, the largest known prime number, 257,885,161-1, was discovered on Great Internet Mersenne Prime Search (GIMPS) volunteer Curtis Cooper's computer. The new prime number, 2 multiplied by itself 57,885,161 times, less one, has 17,425,170 digits.


What is the longest factor string you found?

The longest factor string of any composite number is its prime factorization.


What is the largest known prime number?

As of August 2017, the largest known prime number is 2^74,207,281 − 1, a number with 22,338,618digits.


What is the longest 5 digit number and give its prime factorization?

It is: 99,999 and its prime factors are 3, 41 and 271


How do you know when you have found the longest string of factors for a number?

When all the factors are prime.


How do you know when you have found the longest factor string for a number?

All of the factors are prime.