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9Â years ago
9Â years ago
Hi Abhinav,
172 mod 25 = 22
So, $$43 * 172^{142}$$ mod 25 = $$43 * 22^{142}$$ mod 25
$$22^{142} = 484^{71}$$
So, $$4*(43*172^{142} mod 25)$$ = $$4*(43*22^{142} mod 25)$$
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