Regular Expressions 101

^start of string

Character Class[A-Z]{2}

{2}matches exactly 2 characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case insensitive)

\d{17}a digit, repeated exactly 17 times

$end of string

Global pattern flags

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^[A-Z]{2}\d{17}$

SI56020170014356205