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  2. Busy beaver - Wikipedia

    en.wikipedia.org/wiki/Busy_beaver

    An n-th busy beaver, BB-n or simply "busy beaver" is a Turing machine that wins the n-state busy beaver game. [5] Depending on definition, it either attains the highest score, or runs for the longest time, among all other possible n -state competing Turing machines.

  3. Graham's number - Wikipedia

    en.wikipedia.org/wiki/Graham's_number

    As there is a recursive formula to define it, it is much smaller than typical busy beaver numbers, the latter of which grow faster than any computable sequence. Though too large to ever be computed in full, the sequence of digits of Graham's number can be computed explicitly via simple algorithms; the last 13 digits are ...7262464195387.

  4. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    [36] [37] The connection is made through the Busy Beaver function, where BB(n) is the maximum number of steps taken by any n state Turing machine that halts. There is a 15 state Turing machine that halts if and only if a conjecture by Paul Erdős (closely related to the Collatz conjecture) is false.

  5. 10 Hard Math Problems That Even the Smartest People in the ...

    www.aol.com/10-hard-math-problems-even-150000090...

    Goldbach’s Conjecture. One of the greatest unsolved mysteries in math is also very easy to write. Goldbach’s Conjecture is, “Every even number (greater than two) is the sum of two primes ...

  6. Turing machine examples - Wikipedia

    en.wikipedia.org/wiki/Turing_machine_examples

    The "state" drawing of the 3-state busy beaver shows the internal sequences of events required to actually perform "the state". As noted above Turing (1937) makes it perfectly clear that this is the proper interpretation of the 5-tuples that describe the instruction. [1] For more about the atomization of Turing 5-tuples see Post–Turing machine:

  7. Bedtime Math - Wikipedia

    en.wikipedia.org/wiki/Bedtime_Math

    Bedtime Math's main offering is daily math problems for elementary school-age kids, broadcast by email and posted daily on the website's homepage and Facebook page. [4] Apps: The organization delivers the same daily riddles via a free mobile application for Android and iPhone OS. [5]