Nice-MD5s

Let's find nice patterns of MD5!!

The MD5 message-digest algorithm is a widely used hash function producing a 128-bit hash value. (Wikipedia)

This is totaly a nonsence but let's find nice patterns of MD5s.

A small web site to find

Definitions

A nice pattern considers as one of the below:

#	Name	Explanation	Example
1	Perfect match	md5 of one characters	00000000000000000000000000000000
2	Nice match	md5 starts with N-same characters	444431252d6a104a05fe4a0c6a53a999 (N=4)
3	Gold MD5	md5 of it - equal to itself	N/A
4	MD5 of digits	md5 contains only digits	25855924411269249612523541155616
5	MD5 of letters	md5 contains only letters	abcdefabcdefabcdefabcdefabcdefab
6	Pi MD5	md5 contains pi digits	3141592653589793115997963468544185
7	e MD5	md5 contains contant e digits	2718281828459045090795598298427649

Please see the attached Python code to run on your computer, and add a pull request if you find new one (a credit is promised!).

Feel free to add your language version of the code!

Hall of fame

#	Name	N	MD5	Founder
1	MD5 of digits	32	md5('r8z43szwn6duks2yoqf6eaugebdjdhfk') = 52028506537132879258425329778418	zvibazak
2	MD5 of letters	31	md5(s3i7gogs1gn9at6knh4sartreiqlppaa) = efadaefecffacfcdcebbafacbfeadbd3	johnmave126
3	Gold MD5	12	md5('54db1011d76dc70a0a9df3ff3e0b390f') = 54db1011d76d137956603122ad86d762	Thomas Egense
4	Nice match	11	md5(k4gdqjwk641meqx4fqinagckq4q6sqgk) = 777777777771313bfb8042d99437c4ff	johnmave126
5	Pi MD5	11	md5(b100d474eb100d60d000b08822844917) = 31415926535f1ade4ad780c95815f2dc	Polly
6	e MD5	11	md5(6nencc64tsdhlmfa3ghsvnpe7i1us4ai) = 27182818284d93f1072d42d3b215d83b	johnmave126

Links

• Is there an MD5 Fixed Point where md5(x) == x? - A question on StackOverflow.
• MD5: Existence of invariant (fixed point) - A question on crypto.stackexchange.com.
• Finding Nice MD5s Using Rust - by 妖夢ちゃん (submitted by FuzzyLitchi).
• Rust program to find "nice" md5s - by FuzzyLitchi.
• A terminal app to find nice MD5s - by johnmave126.