(?# Floating point numbers)
[0-9]+\.[0-9]+

(?# Long integer literals)
[0-9]+L

(?# 2^64-1)
18446744073709551615

(?# 2^64)
18446744073709551616

(?# From http parser test)
0GPHKXSJQ826RK7GZEB2

(?# From uint parse test)
18446744073709551615
10000000000000000000
9223372036854775807G

(?# Found in:)
(?# esp-idf/components/nghttp/nghttp2/third-party/http-parser/test.c)
(?# Part of the URL to the page on dan brown)
0SHYY5BZXN3KR20BNFAY