2 21 3 31 4 41 4 41...
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All the twin primes between 50 and 100 are (53, 59) (61, 67) (71, 73) (79, 83) (89, 91)
211 is the only prime number between 200 and 220
not all, but some
216 & 343
They are: 121 144 169 and 196