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91019 = 100019  10009 + 1009 is a palindromic prime whose digits are not prime. Note that 1009, 10009 and 100019 are the smallest four, five and sixdigit primes whose digits are not prime. [Gevisier] Largest palindromic prime representing the date in the form MMDDYY as well as DDMMYY. [Gupta] The smallest palindromic Cyclops Honaker prime. [Gaydos]
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