it is 17 million digits number, 257.885.161-1
There is no biggest prime number: they go on for ever.
2 multiplied by itself 57,885,161 times, less one.
Space.
257,885,161 -1 as of 2013. New primes are being calculated all the time, so this will change as new and larger ones are discovered. Also, note that there are infinitely many primes (proved by Euclid around 300 BCE), so there won't ever be a single "highest" prime, only the highest one known.
No.
No one has ever discovered the mathematical pattern for prime numbers and all that is known about them is that each prime number has only 2 factors which are itself and one.
The biggest cougar ever discovered weighed 270 pounds
No.
No.
Just the number 2. #2 is even and prime.
NO. 2 is the only even prime number.
A prime number has exactly two factors, 1 and the number itself. 1 is not a prime number, and the product will be a composite number if any other prime is used as a factor and multiplied by another prime.