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Archive for September, 2013

Another prime problem

Posted by Chris under MathsChallenge (16 Responds)

Prove that p^6 – 1 is divisible by 504 for all primes p > 7.

Math, next step after “Easy Math”

Posted by ragknot under Tom (32 Responds)

Remember how to do the formula, X=10+Log(X)?
The easy answer, was to guess a value of X and figure the Log of it, and add 10.
That answer gives the next X which is much closer to the right X.
Repeat figuring the X until it does not change.  It is the LOG function that makes the X increase buy [...]

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