Decimal expansion of $2^n$
45240
Starting digits of $2^n$.
20135
Measure of  reals in $[0,1]$ which don't have $4$ in decimal expansion
108497
Can $2^n$ and $2^{n+1}$ have the same digit sum?
49011
How to find last two digits of $2^{2016}$
34374
Simplifying factorials: $\frac{(n-1)!}{(n-2)!}$
121122
Calculate $2^{5104} \bmod 10$ using mental arithmetic
134264
How to get exact Rationalize of a decimal number?
78905
Calculate the factorial of an arbitrarily large number, showing all the digits
143264
Is there a nice way of expanding multinomials of the form $(1+x+\cdots+x^l)^n$?
128098
Decimal Expansion of Pi
33256
Simple regular expression for a decimal with a precision of 2
55437
When does $2^{n}$ divide $3^{n}-1$
8504
Factoring $x^n + y^n$ over the integers
66358
Prove by mathematical induction that $2n ≤ 2^n$, for all integer $n≥1$?
59000
How to round to at most 2 decimal places, if necessary?
142151
Find the last two digits of $9^{{9}^{9}}$
28230
What bizarrities lurk within the decimal expansion of an irrational number?