Similar to 上半平面

Cunningham chain

Additive function

Perfect number

Perfect totient number

Semiperfect number

Cabtaxi number

Local field

Colossally abundant number

Sphenic number

Kneser's theorem (combinatorics)

Knödel number

Green–Tao theorem

Glaisher–Kinkelin constant

Gross–Koblitz formula

Kronecker limit formula

Kronecker's theorem

Computational number theory

Alternating factorial

Composite number

Congruent number

Local zeta function

Highly abundant number

Highly composite number

Highly totient number

Common multiple

Common divisor

Copeland–Erdős constant

Cole Prize