Comment by ChancyChance

3 years ago

You didn’t read the article.

It asks for the largest terminating number.

Probably better than you. There is no such thing as a terminating number, and the article mentions "the shortest terminating program to produce the largest number whose output size exceeds Graham's number". Which should be an expression better than ack(9,9). But since you can emit just inf, you don't need a turing machine/lambda calculus at all.