Why do barriers have a blast resistance of 18,000,003 rather than 18,000,000? [closed]

I've been looking at the minecraft blast resistance values, and I came across something strange:

• Bedrock has a blast resistance of 18,000,000.
• Structure blocks have a blast resistance of 18,000,000.
• Command Blocks have a blast resistance of 18,000,000.
• End Gateway Blocks have a blast resistance of 18,000,000.
• End Portals have a blast resistance of 18,000,000.
• End Portal Frames have a blast resistance of 18,000,000.
• Barriers have a blast resistance of 18,000,003.

That last one seems kinda odd to me. 18,000,000 is basically indestructable, 18,000,003 is almost exactly the same. I really don't see why barriers would be 3 levels harder to destroy than bedrock, structure blocks, command blocks, end gateways, end portals, and end portal frames.

Is there a good reason for this anomaly? If so, what is it?

It seems like nobody knows. The edit in the Minecraft wiki just says "corrected barrier, for some reason it is 18,000,003". I don't think it's worth creating a bug report for it, since it has no downside to have this value. It might be a typo.