[R] memory.size problem

[Patricia Rexova]

Hello,
I have this problem:
I want make 2-way anova lm(x~y+z).
x,y,z are vectors of 4268 numbers (numbers 1-15).

R writes me back:
> lm(x~y+z)
Error: cannot allocate vector of size 35677 Kb
In addition: Warning message:
Reached total allocation of 127Mb: see help(memory.size)

I tried to change memory size and object size

> options(memory=1E15)
> options(object.size=5E12)
But this does not help.

Could you help me with the easiest way to deal my problem?
Thanks a lot

Patricia