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find-minimum-value-of-m-such-that-m-19-1800-mod-2029-




Question Number 197752 by cortano12 last updated on 27/Sep/23
 find minimum value of m   such that m^(19) = 1800 (mod 2029)
findminimumvalueofmsuchthatm19=1800(mod2029)
Answered by AST last updated on 27/Sep/23
m^(2028) =(m^(19) )^(107) m^(−5) ≡1(mod 2029)  ⇒m^5 ≡(−229)^(107) ⇒m^5 ≡1183(mod 2029)  m^(19) =(((m^5 )^4 )/m)≡1800(mod 2029)  ⇒1800m≡(1183)^4 ≡1584(mod 2029)  ⇒25m≡22(mod 2029)  ⇒25m≡22+2029×7=2425=14225  ⇒m≡569(mod 2029)  ⇒min{m}=569
m2028=(m19)107m51(mod2029)m5(229)107m51183(mod2029)m19=(m5)4m1800(mod2029)1800m(1183)41584(mod2029)25m22(mod2029)25m22+2029×7=2425=14225m569(mod2029)min{m}=569

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