1
vote
2answers
43 views

Is factoring a semiprime easier than matrix multiplication?

I'm currently dealing with complexity estimates of various algorithms and the connected mathematical problems. Up until now, I had in mind that problems such as integer factorization and the discrete ...
4
votes
1answer
52 views

Complexity of factoring non-squarefree numbers

Consider the two numbers $N_1=p_1\cdot p_2$ and $N_2=p_1^2\cdot p_2$, where $p_1$ and $p_2$ are primes. Is there any factoring algorithm that can factor $N_2$ faster than the asymptotically fastest ...
2
votes
0answers
100 views

Quadratic Diophantine Equations in Polynomial Time

Considering the problem of finding lattice points $(x_1, x_2 ... x_n)$ that satisfy a quadratic law: $F(x_1, x_2... x_n) = 0$ such that $F(x_1, x_2... x_n)$ is a second degree polynomial It is ...
3
votes
1answer
86 views

Factorization of integers - why does it suffice to consider squarefree instances?

I sat a lecture where a proposition is proven that states the following: If computation of $(k!)_{k\in\mathbb{N}}$ is "easy", then integer numbers can be factored in non uniform polynomial time. ...
2
votes
3answers
348 views

Factoring extremely large integers.

The question is about factoring extremely large integers but you can have a look at this question to see the context if it helps. Please note that I am not very familiar with mathematical notation so ...
5
votes
2answers
866 views

Why is integer factorization considered to be in NP if a quantum computer can compute a factorization in polynomial time?

Sorry if this seems off topic, the cstheory guys told me it was off topic over there, and sent me here. Shor's algorithm on a quantum computer can solve an integer factorization problem in polynomial ...
23
votes
2answers
2k views

Is factoring polynomials as hard as factoring integers?

There seems to be a consensus that factorization of integers is hard (in some precise computational sense.) Is it known whether polynomial factorization is computationally easy or hard? One thing I ...