Is there any limitation on number of predictors if I run stepwise linear regression

#1
Hi...

I need help to solve a problem actually i want to do stepwise linear regression and my predictors are 2279 (differenct combinations of soil and satellite indices) to estimate crop area (independent variable). well i am using spss to run this regression but since last 18 hours it is still running no results????

can any body help

Mobushir