This number is a prime.
Single Curio View: (Seek other curios for this number)If in each of the twin primes 17 and 19 you sandwich the last digit 9, you will obtain a pair of three-digit twin primes (197, 199). [Silva]
Submitted: 2019-01-01 11:55:58; Last Modified: 2019-01-01 12:41:49.
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