Eratosthenes of Cyrene was a 3rd century BCE mathematician from ancient Greece interested in prime numbers, that is numbers only divisible by 1 and themselves.

Cyrene 的埃拉托色尼 (Eratosthenes of Cyrene) 是公元前 3 世纪来自古希腊的数学家，他对素数很感兴趣，素数只能被 1 和它们本身整除。