Division Algorithm

GCD part 1

GCD part 2

Euclidean Algorithm

ax+by=c

Prime

Congruence

Binary and decimal representations of integrals

中國餘式定理

完全剩餘系與Fermat Theorem

Pseudoprime

Wilson's Theorem

Number theoretic function

Mobius function

Number theoretic function

Euler phi function

Reduced residue system and Euler Theorem

order and primitive root (1)

order and primitive root (2)