ESN converter for ericsson phones

Hello all !
Can Somebody help me ?
I need a ESN converter for ericsson phones to convert decimal to hexa.
Thanks in advance !
Silva.

use windows calculator in the scientific mode

convert esn from decimal to hexa its the same 4 all brands

I guess he needs tha conversor for the encrypted esn inside the 24c256.

I have the checksum calculator but not the conversor.

ismael_mj23