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1019

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1031

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1033

32^2 + 3^2

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1039

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1049

Each digit is a perfect square, and there is no smaller 4-digit prime with that property.

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1051

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1063

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1069

With digits reversed (9601) you get a different prime. 1069 is the smallest 4-digit number with this property.

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1087

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1093

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1097

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1103

I can't believe this thread got so far. And with so few mistakes.

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1109

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1117...May be we get a call from some Cryptography or Security Co. :P

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1123 The FBI will investigate this thread.

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1129

At the border of a prime desert. I.e., relatively speaking, it's a long way to the next prime.

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From the other side of the world... 1151

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1153

33^2 + (2^3)^2

Seems like everything can be broken into 2s and 3s.

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Where do you come up with this stuff?

1181

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1187

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1193

Reversed, it's also a prime (3911). By itself that's not big news. But the same fact holds for the next 9 primes (10 reversi-primes in a row, starting here) which we will see as we proceed...

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1201

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1213

The smallest 4-digit prime comprised of consecutive numbers (12,13).

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1217

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1217

1223

Are we only 4?

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