How do I solve for x in this modular arithmetic equation (a is equal to 11 in this equation) (See first pic)?
I believe that I have to use the Extended Euclidean Algorithm. According to my lecture notes, the easiest way to do this is with the FISH algorithm (Here is an example of the algorithm in action in the second pic):
However, I don’t know how to rearrange the equation in order to perform this algorithm.
I would really appreciate any assistance from you guys!
#Help in a Modular Arithmetic equation
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,w 3^10
It's mod 9743 according to he first picture. Did I misunderstood the question?
oh that makes a lot more sense
I’ve only seen mods notated a triple equals (mod b) lmao
131221 looks like it simplifies very nicely if you just take its mod
Oh! So you're saying that I should simplify 131221 with mod 9743, should I leave 27ax be? I feel that I can multiple 27 with 11 (the value of a) to get 292x, but should I avoid simplifying that with mod 9743?
yea
so once you simplify the 131221
you can then isolate your 292x
actually its 297x
I think I might have made a mistake in the 4th line. I was going under the assumption of the Distributive property from basic Arithmetic, but that might me the wrong approach
thats good yea
How do I isolate the x from here? I could subtract 4562 to 59049, but how do I move the mod 9743 away from x?
does x have to be an integer or no
wait also are we in mod 9743 or mod 59049
when you take the mod of something the answer is usually lower than whatever the mod is...?
ive never formally learned mods i just learned them for math contests so sorry if im just completely wrong
No problem! I'm literally learning this from scratch through lectures in my Cryptography, class so I'm not learning any of the fundamental concepts first, which is why I have these gaps in my knowledge.
oh
do you know which number is the mod number and which one is the result
is it 3^10?
find it very weird the result is much higher than the mod number
According to the picture, 3^10 seems to be at the right side of the equation, so I guess it's the result?
imma wait for a more experienced helper i guess
it does seem like 3^10 is the result but its WAYYY over 9743 so its very strange
Sure thing! It's best to be careful. Thanks for your help, though!