[+] Opening connection to crypto.2020.chall.actf.co on port 20603: Done
We define a^^b to be such that a^^0 = 1 and a^^b = a^(a^^(b-1)), where x^y represents x to the power of y.
Given this, find a positive integer x such that a^^x = b mod p.
Generating challenge 1 of 10...

['p = 1050845407915348026259', 'a = 666500369732175120296', 'b = 744687748705723318808']
x value : 5
Correct!
Generating challenge 2 of 10...

['p = 2003586835851638157496969', 'a = 911814632323036355074467', 'b = 1658769480234451385090682']
x value : 3
Correct!
Generating challenge 3 of 10...

['p = 2888681331481224616640071663', 'a = 2565257379255868761665994905', 'b = 2736005369376590047768959067']
x value : 7
Correct!
Generating challenge 4 of 10...

['p = 5897194058428717189586076159829', 'a = 774070130811223351886709240572', 'b = 774070130811223351886709240572']
x value : 1
Correct!
Generating challenge 5 of 10...

['p = 14229128259585315809330587205286649', 'a = 3044972618334226455629822053226775', 'b = 6545000879790566498046902743374578']
x value : 8
Correct!
Generating challenge 6 of 10...

['p = 41493237989515761273356052669667680407', 'a = 5495323088968945880366159033400965957', 'b = 24395276390198555514991145382928487822']
x value : 12
Correct!
Generating challenge 7 of 10...

['p = 82422028336339514060361429308484493754557', 'a = 48735836440908587131208620683071556982353', 'b = 75580267524585045012906437603297003415614']
x value : 6
Correct!
Generating challenge 8 of 10...

['p = 95606966236108046979394971354161312969640463', 'a = 77489561702707341024650993672813520681779447', 'b = 55779930210796692733533539551516695655404293']
x value : 8
Correct!
Generating challenge 9 of 10...

['p = 196211908252173245994749338829699456530410771997', 'a = 142804738146914201734740038526547956448184924832', 'b = 94483479957219214407753181737972562245004732903']
x value : 4
Correct!
Generating challenge 10 of 10...

['p = 696827615707907735561352967595170971749155187486881', 'a = 206209927389777583479521087127206855548723159702447', 'b = 447589893251659539934562750976997693682996962777216']
x value : 9
Correct!
flag: actf{lets_stick_to_discrete_log_for_now...}

[*] Closed connection to crypto.2020.chall.actf.co port 20603