Uscis Receipt and account number

[ronnin]

Hi!!!

I did my activation trip and enter to the United States. Now my friend got the USCIS letters for me and they sent the GC and also 2 numbers

Uscis Receipt
Account number

What do they mean?

I tried

https://egov.uscis.gov/cris/caseStatusSearchDisplay.do
https://efiling.uscis.dhs.gov/efile/

THANKS!

 

[ronnin]

No one?