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I came across this problem on another forum. Seems to be very tough.
The only trivial facts are:
m is of the form 4x+3 for n>1
a trivial solution (n,m) is (0,2)
for n even, m^m-1 is divisible by 3
for n odd, m^m-2 is divisible by 3
any ideas?
The only trivial facts are:
m is of the form 4x+3 for n>1
a trivial solution (n,m) is (0,2)
for n even, m^m-1 is divisible by 3
for n odd, m^m-2 is divisible by 3
any ideas?