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2025-07-24 23:08:19 -04:00
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notebooks/problem0026.ipynb
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@@ -101,7 +101,11 @@
"As a concrete example of the above, consider $d = 2^4 \\times 5 \\times 63 = 5040$. The decimal representation of $u = \\frac{1}{d}$ is $0.0001(984126)$, where 984126 is the repetend. Therefore $q=4$ and $r=6$. Sure enough, $10^q 10^r u - 10^q u = 1984125$ is an integer; therefore, $10^{10} \\equiv 10^4 \\pmod{5040}$, and $10^6 \\equiv 1 \\pmod{63}$.\n",
"\n",
"## Relevant sequences\n",
"* Periods of reciprocals: [A007732](https://oeis.org/A007732)"
"* Periods of reciprocals: [A007732](https://oeis.org/A007732)\n",
"\n",
"#### Copyright (C) 2025 filifa\n",
"\n",
"This work is licensed under the [Creative Commons Attribution-ShareAlike 4.0 International license](https://creativecommons.org/licenses/by-sa/4.0/) and the [BSD Zero Clause license](https://spdx.org/licenses/0BSD.html)."
]
}
],