how to convert a number in exponential form to normal decimal form?

I am trying to get the complete value of the number which is in exponential form but its not showing the complete value. I have tried below:

Code:

format long

pmod=hex2dec('DB7C2ABF62E35E668076BEAD208B');

fprintf('\n%.f',pmod);

Output : 4451685225093714900000000000000000

but the correct output should be 4451685225093714772084598273548427

Is there any other method to get the complete value?

Answer 1

[Stephen23]

That value is far too large to store in a double without loss of precision. You will need to use a custom data class, a symbolic variable, or store the output digits in a char vector. If you are okay with having the output digits in a char vector then you can download John D'Errico's excellent base2base function:

>> base2base('DB7C2ABF62E35E668076BEAD208B',16,10)
ans = 4451685225093714772084598273548427

You could easily convert the output of base2base to a symbolic variable.