Delphi corner

Sometimes it is necessary to multiply or divide very long integers (of course also to add and subtract) especially in the area of prime numbers and related problems. Basically Delphi is able to deal with very long integers (Extended can hold large numbers to 1.1 * 104932). But this is not of any use if one wants to know all and not only 20 digits.

There are some proposals how to use case with strings in Delphi. Have a look at my suggestion: