There's an error here - I said that computability isn't a property of numbers. That's not really fair. Real numbers on the whole can be non-computable, but all the Integers are computable, and all these BB() family functions have integer results, so those numbers would always be computable, we just have no idea what they are exactly.
Chaitin's Constants are not computable. They're some fraction (between 0 and 1) which is the probability of a randomly chosen program for some Turing equivalent system halting. This constant will vary depending on how the system works, but we can't compute it for any system at all for obvious reasons.
Chaitin's Constants are not computable. They're some fraction (between 0 and 1) which is the probability of a randomly chosen program for some Turing equivalent system halting. This constant will vary depending on how the system works, but we can't compute it for any system at all for obvious reasons.