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math/rsa.ipynb
2025-07-19 10:51:20 +08:00

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"source": [
"### Euler's product formula\n",
"\n",
"$\\phi(n)=n\\prod_{p|n}\\left(1-\\frac{1}{p}\\right)$"
]
},
{
"cell_type": "markdown",
"id": "0be1d436-5075-4f2f-96ec-e225179209a7",
"metadata": {},
"source": [
"### Euler's theorem\n",
"\n",
"$gcd(a, n)=1$\n",
"\n",
"$a^{\\phi(n)}\\equiv1 \\bmod n$"
]
}
],
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