Oracle NUMBER(p) storage size?

Question

I\'ve searched for it but i can\'t find a conclusive answer to my question...

I need to know what is the storage size of a number(p) field in Oracle.

Examples: N

Answer 1

NUMBER  
999...(38 9's) x10125 
maximum value   Can be represented to full 38-digit precision (the mantissa).

-999...(38 9's) x10125 
minimum value   Can be represented to full 38-digit precision (the mantissa).


Precision   38 significant digits    ==> NUMBER(38) is the max

Refer here and also may be here