Dec 2, 2016 · I found another Properties such that $137=2^7+2^3+1$ or the only way to write the number $137$ as a summation of two square numbers is $137=4^2+11^2$. thanks for your …

Dec 8, 2025 · Is $137 = 2^7 + 3^2$ the unique sum of a power of $2$ and a power of $3$? [closed] Ask Question Asked 10 days ago Modified 10 days ago

Oct 26, 2020 · Your working is fine. You need to end by noting that $-5 \equiv 6 \pmod {11}$ since they asked for a residue between $0$ and $10$. An alternative approach would be: $7^ {137} …

Jul 30, 2023 · Not that it helps in this case, but you can also subtract the equations, to get $ (y-1)^4- (x-1)^4=609$

little bit. I'm trying to solve a problem that said, what is the remainder of dividing x ^ 137 + x + 1 in x + 5? in $\mathbb {Z}_7 [x]$

Aug 6, 2015 · Exponential Decay Question: The Half-Life of Cesium-137 is 30 Years. Suppose We Have a 100-mg Sample. Ask Question Asked 10 years, 4 months ago Modified 10 years, 4 …

Oct 27, 2017 · By halving 5 (the number you are rounding to) = 2.5 Then to find the upper bound you add it to the number you are rounding so 135 + 2.5 = 137.5 ( this is a multiple of 5).

I need some help with this problem: $$439^{233} \\mod 713$$ I can't calculate $439^{223}$ since it's a very big number, there must be a way to do this. Thanks.

May 22, 2013 · It's possible to generate all possible combinations of 3 digits by counting up from 000 to 999, but this produces some combinations of digits that contain duplicates of the same …

Dec 18, 2025 · Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and …