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Re: [Phys-l] Inscrutable words, etc. - not physics

At 05:03 PM 5/16/2007, Laurent Hodges wrote:
...Aha, you western heathen, do you know the
smallest odd Carmichael number?
..
Laurent Hodges

Laurent,

Can you explain why I should be interested enough in Carmichael numbers to know off-hand what the smallest one is? Do they have applications in physics? Personally, I had never heard of them before :-)

Tim F


From Wolfram MathWorld:
"A Carmichael number is an odd composite number n which satisfies Fermat's little theorem
a^(n-1)-1=0 (mod n) for every choice of a satisfying (a,n)==1 (i.e., a and n are relatively prime) with 1<a<n."