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Number Theory Fundamentals: From Divisibility to Algorithms

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number theory

Number Theory Fundamentals: From Divisibility to Algorithms

4 weeks
0 Learners
Jun 11

A four-week, proof-and-code roadmap that moves from integer divisibility and modular arithmetic to congruences, quadratic reciprocity, and cryptographic algorithms. The path emphasizes theorem proving, algorithm design, implementation, benchmarking, and verifiable proof-of-work artifacts.

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W1

Integers, Divisibility, and Modular Arithmetic Foundations

By the end of this module you will be able to prove core integer theorems, implement Euclidean algorithms, and reason rigorously in Z/nZ.

4 videos80m
3 readings
4 topics
1 homework
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Topics

1.1
Divisibility and the integers
35 minutes
1.2
Euclidean algorithm and Bézout identity
14 minutes
1.3
Prime numbers and unique factorization
21 minutes
1.4
Modular arithmetic foundations
10 minutes
W2

Solving Congruences and Multiplicative Structure

By the end of this module you will be able to solve linear and simultaneous congruences, compute multiplicative functions, and prove Euler-type results for residue rings.

4 videos96m
3 readings
4 topics
1 homework
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W3

Quadratic Residues, Reciprocity, and Primitive Roots

By the end of this module you will be able to classify quadratic residues, compute Legendre and Jacobi symbols, apply quadratic reciprocity, and analyze cyclic subgroups modulo primes.

3 videos83m
3 readings
4 topics
1 homework
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W4

Algorithmic Number Theory and Cryptographic Primitives

By the end of this module you will be able to implement primality tests, factorization routines, RSA operations, and discrete-logarithm algorithms with documented correctness and limitations.

4 videos57m
3 readings
4 topics
1 homework
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