«Number» file extensions

File extensions starting with a number

3fg

3fg

Gencrowd Group file
3fr

3fr

RAW bitmap image
3g2

3g2

3GPP2 Movie
3gp

3gp

3GPP Movie
3gp2

3gp2

3GPP2 Movie
3gpp

3gpp

3GPP Movie
3pi

3pi

3rd PlanIt Document
3sc

3sc

3t

3t

MIKE3Toolbox.Document
3tf

3tf

Amigo Document
4

4

Pro/ENGINEER Versioned File
40

40

Pro/ENGINEER Versioned File
400

400

Pro/ENGINEER Versioned File