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visits member for 1 year, 5 months
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Oct
17
comment Prove that $2^{10}+5^{12}$ is composite
@pushpen.paul: I didn't even have idea how to try without trying to use congruences and check divisibility with 3,7,11... but then I saw on Alpha factorization of number and realize that is not good start in this case
Oct
17
accepted Prove that $2^{10}+5^{12}$ is composite
Oct
17
comment Prove that $2^{10}+5^{12}$ is composite
@Hakim: yes, lapsus :)
Oct
17
asked Prove that $2^{10}+5^{12}$ is composite
Oct
9
accepted Find all positive integers $(x,y,z)$ such that $\frac{1}{x}+\frac{1}{y}+\frac{1}{z}$ is integer
Oct
9
revised Find all positive integers $(x,y,z)$ such that $\frac{1}{x}+\frac{1}{y}+\frac{1}{z}$ is integer
deleted 35 characters in body
Oct
9
asked Find all positive integers $(x,y,z)$ such that $\frac{1}{x}+\frac{1}{y}+\frac{1}{z}$ is integer
Oct
3
accepted Theory number problem
Oct
3
comment Theory number problem
Wonderful!Can you explain me how you used Euclidean Algorithm in this steps?
Oct
3
revised Theory number problem
added 1 character in body
Oct
3
asked Theory number problem
Sep
12
asked Problem in complexity class $P$ with highest known degree of a polynomial
Aug
25
accepted Easier way to solve $\int\frac{2+\sin x}{\sin x(1+\cos x)}dx$
Jul
31
reviewed Approve suggested edit on Easier way to solve $\int\frac{2+\sin x}{\sin x(1+\cos x)}dx$
Jul
31
asked Easier way to solve $\int\frac{2+\sin x}{\sin x(1+\cos x)}dx$
Jul
7
accepted Just solution check- Taylor serie around $x_0=2$
Jul
2
awarded  Curious
Jun
28
answered Just solution check- Taylor serie around $x_0=2$
Jun
28
asked Just solution check- Taylor serie around $x_0=2$
Jun
26
comment Decide convergence of this series
Great! thank you. This is acctualy a proof limit is infinity, which is even better! =)