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The only threedigit prime repfigit number. [Trotter] 197 and 2^{197} * 197#  1 are primes. [Boland] The first three digits of the prime 197 * 197! + 1 are 197. [Luhn] Surrey and England batsman Jack Hobbs scored a record 197 centuries. The sum of the first dozen primes. [Brod] The smallest prime number that is the sum of 7 consecutive prime numbers (17+19+23+29+31+37+41). [Schuler] 197 is the sum of digits of all twodigit primes. [Gallardo] The smallest multidigit prime p that makes 10^p9 prime. Note that the next prime (199) has the same property. They are twin primes! [Gallardo] This prime is the smallest number to be the sum of repdigits of its digits: 111 + 9 + 77 = 197. [Post] The sum of the squares of all the four composite digits (4^2 + 6^2 + 8^2 + 9^2). [Silva]
(There is one curio for this number that has not yet been approved by an editor.) To link to this page use http://primes.utm.edu/curios/page.php?number_id=645
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