255255255251

This number is a prime.

25 5255255251

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The largest prime IP address is 255.255.255.251. Note that it remains prime if we convert to its 32-bit equivalent 255*256^3+255*256^2+255*256+251 = 4294967291. [Rupinski]

Submitted: 2003-02-16 22:01:12; Last Modified: 2008-01-30 17:28:00.