First decimal digit of a very large number.
103711
Finding the first digit of $2015^{2015}$
42548
Arithmetic with Arbitrarily Large Integers in PHP
104928
How To Represent 0.1 In Floating Point Arithmetic And Decimal
56114
JavaScript: Bitwise shift of long long number
29448
Store and work with Big numbers in C
72223
Last non Zero digit of a Factorial
132848
Function to determine if two numbers are nearly equal when rounded to n significant decimal digits
9105
Finding the last two digits $123^{562}$
49116
Finding the last digit of $103^{103^{103^{103^{103}}}}$
26701
Is there a reliable way in JavaScript to obtain the number of decimal places of an arbitrary number?
35110
Predicting the number of decimal digits needed to express a rational number
45240
Starting digits of $2^n$.
108820
Applications using Decimal versus double . .
80320
When can I assume that all decimal digits returned by Mathematica are provably correct?
68828
How to increase significant digits in Mathematica
95033
Find the remainder of a number with a large exponent
141111
Equation that can easily be changed to output the digit in 1's, 10's ,100's etc?