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IntegerLength

IntegerLength[n]
gives the number of digits in the base 10 representation of the integer n.
IntegerLength[n, b]
gives the number of digits in the base b representation of n.
  • Integer mathematical function, suitable for both symbolic and numerical manipulation.
EXAMPLESCLOSE ALL
Basic Examples   (4)
Find the number of decimal digits in 123456789:
The number of binary digits in 100!:
Plot it:
The IntegerLength for different bases:
Find the number of decimal digits in 123456789:
In[1]:=
Click for copyable input
Out[1]=
 
The number of binary digits in 100!:
In[1]:=
Click for copyable input
Out[1]=
 
Plot it:
In[1]:=
Click for copyable input
Out[1]=
In[2]:=
Click for copyable input
Out[2]=
 
The IntegerLength for different bases:
In[1]:=
Click for copyable input
Out[1]=
Applications   (2)
Find how the number of digits in 100! decreases with the base:
New in 6
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