The answer is vague but correct .
Take any Prime number and any other number whose combined digit length is 401 and their product will generate a 400 or a 401 digit number.
The answer is vague but correct . Take any two prime numbers whose combined digit length is 501 and their product will generate a 500 or a 501 digit number.
271
Yes.
Any prime numbers of about 66 or 67 digits will do.
23
You seek for prime numbers that are approximately 200 digits big, then multiply them. I don't know details about the algorithms, but I understand that for cryptography, instead of using an algorithm that will be guaranteed to give a prime number, an algorithm is used, instead, that has a very, very high probability of giving a prime number. Probably this is done because it is faster.
9797 is the largest two digit prime number.
679 is the product of the largest single-digit prime number and the largest two-digit prime number.
No.
The first 'three digit' Prime Number is 101.
11 is the smallest two-digit prime number.
997 is the biggest 3 digit prime number.