Modular Arithmetic and Algebra

Given:

4096x=61741+15625y\large{4096 x = 61741 + 15625 y}

-x and y are integers\text{-x and y are integers}

-y is not divisible by 5\text{-y is not divisible by 5}


x=61741+15625y4096 x = \dfrac{61741 + 15625y}{4096}

61741+15625y0(mod4096)61741 + 15625y \equiv 0 \pmod{4096}

15625y61741(mod4096)15625y \equiv -61741 \pmod{4096}

15625y61741+409657645(mod4096)15625y \equiv -61741 + 4096 \equiv -57645 \pmod{4096}

3125y11529(mod4096) [divide 5] 3125y \equiv -11529 \pmod{4096} \text{ [divide 5] }

3125y11529409615625(mod4096)3125y \equiv -11529 - 4096 \equiv -15625 \pmod{4096}

y54091(mod4096)y \equiv -5 \equiv 4091 \pmod{4096}

Minimum positive values:y=4091,x=15621\text{Minimum positive values:} y = 4091, x = 15621

#NumberTheory

Note by Lin Shun Hao
1 year, 1 month ago

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