Re: number of digits in n^p

*To*: mathgroup at smc.vnet.net*Subject*: [mg60465] Re: number of digits in n^p*From*: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>*Date*: Sat, 17 Sep 2005 02:31:46 -0400 (EDT)*Organization*: The Open University, Milton Keynes, U.K.*References*: <dgdu77$152$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

George wrote: > i wonder if there is a formula, a function, or a method in mathematica to know the number of digits in n raised to the power of p without calculating the result, such as 67^89 will give us a number with 163 digits in it, is there a way to know this result without actually calculating 67^89 > thanks > George Hi George, Is this what you are looking for? In[1]:= Plus @@ DigitCount[67^89] Out[1]= 163 Best regards, /J.M.