web3.eth.accounts.privateKeyToAccount returns a different address than shown on MyEtherWallet

[narcis2007]

When I call web3.eth.accounts.privateKeyToAccount it returns a different address than what I get on MyEtherWallet. Do you know why? Or it's a bug?

[narcis2007]

Nevermind, I had to add 0x to it

[adnan-i]

Just to clarify for any future wanderers, like I was.
You need to prepend 0x to your private key:

const privateKey = '555';
const account = web3.eth.accounts.privateKeyToAccount('0x' + privateKey);

[gernotpokorny]

thx adnan-i. I guess nobody knows why this is not documented in the API docs...

[leberknecht]

Also good to know: for me, with web3@1.0.0-beta.52 , passing the key without 0x did resulted in a successful transaction while the address was wrong oO So apparently the signing does check for the prefix and handles the prefix-missing case, while this is not done on the address-derivation. I guess.