Number theory

• Modular arithmetic

algebraic-number arithmetic-function arithmetic-hyperops arithmetic-hyperops2 arithmetic-ops arithmetic-ops2 arithmetic combinations combinatorics complex-number counting-theory counting divisiblity divisor-function divisor-summatory-function divisor enumerative-combinatorics fractions fundamental-counting-rules gcd-lcm hyperops imaginary-number infinity integers interesting-properties irrational lagrange-4-square-theorem modular-arithmetic natural-number-def natural-number number-system number-systems number-theory number-theory2 number number2 numeral-prefixes numeral-system numeral ops-addition ops-division ops-multiplication ops-percentage ops-subtraction parity partition permutations polynomials prime-factorisation prime-number prime PRIMER probability rational real symbol transcendental ulams-spiral well-ordering-principle whole-numbers