^start of string
P5RNPthe literal text P5RNP (case sensitive) \d{8}a digit, repeated exactly 8 times
\/the literal / (4710 / 578 / 2F16)
\d{5}a digit, repeated exactly 5 times
Sthe literal S (8310 / 1238 / 5316) (case sensitive)
\d+a digit, repeated at least once
\.the literal . (4610 / 568 / 2E16)
\d{2}a digit, repeated exactly 2 times
Athe literal A (6510 / 1018 / 4116) (case sensitive)
$end of string