1123 is a prime of the form n2 + n + 1, for n = 33.
1123 has digits that start the Fibonacci sequence.
1123 is the smallest prime showing three consecutive digits.
1123 has digits that start the Fibonacci sequence.
1123 is the smallest prime showing three consecutive digits.
1123 is a divisor of 333 - 1.
11/23 (November 23) is the only date containing the concatenation of two 2-digit primes that can be read as a prime number in either "month-day" or "day-month" format, i.e., 11/23 or 23/11.
11/23 (November 23) is the only date containing the concatenation of two 2-digit primes that can be read as a prime number in either "month-day" or "day-month" format, i.e., 11/23 or 23/11.
Source: Prime Curios!
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