素数和因数分解补题
HDU 2136 - Largest prime factor
HDU - 1492 The number of divisors(约数) about Humble Numbers
HDU 3758 - Factorial Simplification
GCD&LCM补题
HDU 3092 - Least common multiple
同余性质 和 循环节 补题
HDU 2619 - Love you Ten thousand years
HDU 2683 - TCE-frep number system
HDU 2814 - Interesting Fibonacci
模线性方程 和 逆元补题
HDU 1792 - A New Change Problem
HDU 2854 - Central Meridian Number
HDU 2685 - I won't tell you this is about number theory
模线性方程组 补题
HDU 1788 - Chinese remainder theorem again
POJ 2891 - Strange Way to Express Integers
HDU 1930 - And Now, a Remainder from Our Sponsor
欧拉函数&欧拉定理&费马小定理
HDU 2462 - The Luckiest number
HDU 3307 - Description has only two Sentences
容斥原理
HDU 1796 - How many integers can you find
大素数判定
POJ 3641 - Pseudoprime numbers