emirp

词形变化

emirps 复数 emirps

释义与例句

n.
  1. 1.

    A prime number that becomes a different prime when its decimal digits (or digits in some specified other base) are reversed.

    数学

    The first few emirps in base 12 (using the convention T for ten and E for eleven) are: 15, 51, 57, 5E, 75, E5, 107, ...

词源

prime spelled backwards.

来源：wiktionary