Vanity addresses?

[Bitcoinbikers]

Dear bitcointalk.org,

I have a question for you, how many vanity addresses could I generate that begin with 1bitco?

Regards
bitcoinbikers

[LouReed]

Millions! 

[Remember remember the 5th of November]

Millions! 

Much more than that.

[Bitcoinbikers]

Wow, that's crazy  It takes so long for vanitygen to find one though! I've been waiting 6 hours for 1 address 

[Remember remember the 5th of November]

Wow, that's crazy  It takes so long for vanitygen to find one though! I've been waiting 6 hours for 1 address 

You can use your graphics card(nvidia included) for faster generation.

[LouReed]

Millions! 

Much more than that.

Billions upon billions!!!   

[DannyHamilton]

There are approximately 120,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses that start with 1bitco (that's 1.2 X 10⁴⁴).

There are approximately 80,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses that do NOT start with 1bitco (that's 8 X 10⁵²).

So, for every address that you find that starts with 1bitco, you need to search through on average approximately 666,666,667 addresses.

[Bitcoin Magazine]

There are approximately 120,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses that start with 1bitco (that's 1.2 X 10⁴⁴).

There are approximately 80,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses that do NOT start with 1bitco (that's 8 X 10⁵²).

So, for every address that you find that starts with 1bitco, you need to search through on average approximately 666,666,667 addresses.

well if they run out, there's always litecoin with 12 trillion more

[Brewins]

minimum bitcoin address size: 27 characters. Maximum size: 34
1bitco = 6 characters
58 valid character for the other spots

27 characters: (58)^21 (around 10^37) possible unique address
28 characters: (58)^22(around 10^38) possible unique address
29 characters: (58)^23(around 10^40)

Others are more or less one order of maginitude higuer than the previous one, so around 10^41 and 10^42 for 30 and 31 characters.

Sum up, and here is your answer

EDIT: confusion about expoents

[DannyHamilton]

58 valid character for the other spots

27 characters: (21)^58 (4*10^27) possible
28 characters: (22)^58(7*10^77) possible

Do I have my math confused?  (It's been known to happen from time to time).

Shouldn't it be 58²¹ and 58²²  (not 21⁵⁸ and 22⁵⁸)?

Then again, you do have a PRIMEDICE ad in your sig, and I've generally found that 99% of the people who have such signatures don't have any idea what they are talking about and are just spouting nonsense to get their post count up so they can collect more for the advertisement.

I'll just click "ignore" on your ID until I see some reason to do otherwise.

[ronskii]

Is GPU the most effective way to generate vanity addresses?

[Malin Keshar]

Is GPU the most effective way to generate vanity addresses?

I think yes, because they have lots of cores that can parallelize the job and make it way quicker than with the few cores a CPU have.

[msleader]

Is GPU the most effective way to generate vanity addresses?

Same queston

[Bitcoinbikers]

Is GPU the most effective way to generate vanity addresses?

It's the same as mining, your GPU will be much faster than CPU

[dothebeats]

There are many, many unique addresses that can have 1bitco in it. As for using vanity addresses, I suggest you put only small amounts on it because some of them aren't that secure compared to those traditionally generated addresses. Good luck on searching a vanity addresses that suits your taste

[Dannie]

There are many, many unique addresses that can have 1bitco in it. As for using vanity addresses, I suggest you put only small amounts on it because some of them aren't that secure compared to those traditionally generated addresses. Good luck on searching a vanity addresses that suits your taste

A vanity address is as secure as any other addresses, if you are generating it correctly (use your own GPU, or use split-key generation with vanity pools) and using it correctly (no malware on your machine, etc.)

[ojm]

There are approximately 120,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses that start with 1bitco (that's 1.2 X 10⁴⁴).

There are approximately 80,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses that do NOT start with 1bitco (that's 8 X 10⁵²).

So, for every address that you find that starts with 1bitco, you need to search through on average approximately 666,666,667 addresses.

Able to do the maths for "ojm" ?

[Bitcoinbikers]

There are approximately 120,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses that start with 1bitco (that's 1.2 X 10⁴⁴).

There are approximately 80,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses that do NOT start with 1bitco (that's 8 X 10⁵²).

So, for every address that you find that starts with 1bitco, you need to search through on average approximately 666,666,667 addresses.

Able to do the maths for "ojm" ?

http://bitcoinvanitygen.com/

[ranochigo]

There are approximately 120,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses that start with 1bitco (that's 1.2 X 10⁴⁴).

There are approximately 80,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses that do NOT start with 1bitco (that's 8 X 10⁵²).

So, for every address that you find that starts with 1bitco, you need to search through on average approximately 666,666,667 addresses.

Able to do the maths for "ojm" ?

http://bitcoinvanitygen.com/

how do I use it in my wallet?

(Bitcoin-QT)

Use the command: importprivkey (private key here)
Make sure to find one services that allows you to generate split vanity key. If no, the security will be 0 since the server knows your private key.

[notlist3d]

Is a vanity address hard to make?

No very easy to make.  Deepening on length depends on time to make.