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G.C. Chrystal's Algebra (Edinburgh, 1889, vol. ii,
p. 159) gives the following amusing fallacy:
[Caldwell] The smallest prime such that it and the next 4 primes (1889, 1901, 1907, 1913, 1931) are all equal to 5 (mod 6). [Post] The year the Wall Street Journal was first published. [Green]
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