[NickM]

I don't think it's specific to "the prime-enthusiast community". Most people would look at you oddly if you claimed that 3 is a five-digit number.

[lapetitejort]

On the flip side, many people here would claim that 0x00000003 is an eight digit number.

[floatingatoll]

Only to win an argument by nitpick golfing. In everyday serious conversation that’s a 4-byte number, not an 8-digit number.