How to extract information from large file based on search pattern

I am using vim for windows

I have large (800 mb plus) file containing following formate

the file is space separated

8232394 06774483 N 19850910 19870818 19910818 EXP.
8309716 06774483 N 19850910 19870818 19910319 REM.
4687262 06908244 N 19860917 19870818 19990815 EXP.
4687262 06908244 N 19860917 19870818 19990309 REM.
4687262 06908244 N 19860917 19870818 19950221 M184
4687262 06908244 N 19860917 19870818 19910108 M173
4687262 06908244 N 19860917 19870818 19880802 ASPN
4687263 06868897 N 19860527 19870818 19990128 M185
4687263 06868897 N 19860527 19870818 19950509 RMPN
4687263 06868897 N 19860527 19870818 19950509 ASPN
4687263 06868897 N 19860527 19870818 19950119 M184
4687263 06868897 N 19860527 19870818 19910311 ASPN
4687263 06868897 N 19860527 19870818 19910124 M173
4687264 06882047 N 19860703 19870818 19990815 EXP.
4687264 06882047 N 19860703 19870818 19990309 REM.
4687264 06882047 N 19860703 19870818 19950503 RMPN
4687264 06882047 N 19860703 19870818 19950503 ASPN
4687264 06882047 N 19860703 19870818 19950119 M184
4687264 06882047 N 19860703 19870818 19910311 ASPN
RE45781 14176526 N 20140210 20151027 20150929 ASPN
RE45786 14260890 N 20140424 20151027 20150929 ASPN
RE45790 14454285 Y 20140807 20151103 20151008 ASPN
RE45793 13445791 N 20120412 20151103 20151006 ASPN

I have another .txt file (small) containing following formate
4687264
4687264
4687264
RE45781
RE45786
RE45790
RE45793

Now I want to extract lines from big file having match from the small file
with respect to column 1 which will only contain lines which are presnet in
small txt file

The result file should look like this

4687264 06882047 N 19860703 19870818 19990815 EXP.
4687264 06882047 N 19860703 19870818 19990309 REM.
4687264 06882047 N 19860703 19870818 19950503 RMPN
4687264 06882047 N 19860703 19870818 19950503 ASPN
4687264 06882047 N 19860703 19870818 19950119 M184
4687264 06882047 N 19860703 19870818 19910311 ASPN
RE45781 14176526 N 20140210 20151027 20150929 ASPN
RE45786 14260890 N 20140424 20151027 20150929 ASPN
RE45790 14454285 Y 20140807 20151103 20151008 ASPN
RE45793 13445791 N 20120412 20151103 20151006 ASPN

Is there any way?



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