CODEWITHSUNDEEP
phpmd5
user1068119
user1068119

Reputation: 39

Do all MD5 hexadecimal hash representations start with a number?

Whenever I hash a name of a file with MD5 (the file was just uploaded and given a MD5 hashed name) the hexadecimal representation of the hash always starts with a number.

Is this a coincidence of the few files I have on my server, or is this a normal case?

Upvotes: 3

Views: 2898

Answers (4)

corintiumrope
corintiumrope

Reputation: 105

the md5 can only be hexadecimal (32 digits 0-9 A-F), the hash is not part of it.

Upvotes: 0

Esailija
Esailija

Reputation: 140220

The # is not part of the md5.. the whole md5 is 32 letters each representing 4 bits with one hexadecimal digit. Since the whole md5 is just hexadecimal digits, you could say it always starts with a number.

You might have meant if they always start with the hex digit 0-9 instead of a-f, then the answer is no. They can start anywhere between 0-f.

To wrap it up: hexadecimal numbers

Upvotes: 1

Chris Eberle
Chris Eberle

Reputation: 48775

chris@siri ~ (3.6M) $ echo 'yoyo' | md5sum 
e0ea852f2f2d9564429842f7863af499  -

it's a coincidence.

Upvotes: 11

codaddict
codaddict

Reputation: 455020

md5 is a 32-character hexadecimal number so it can start with a digit or a letter between a and f.

Upvotes: 1

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