The first three numbers determine where you were born? Or is it age of issue?
The first three numbers were assigned by your place of residence when the applicant applied. “042” number prefix was for a person who resided in CT when it was issued in March 1977. Obama never lived in CT. And in March 1977 per his life narrative he was living in Hawaii. Re-read Susan Daniels article in full, which was the subject of this thread today. She explains the numbering system as it existed back in 1977 fully.