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+ 58 is the sum of the first seven prime numbers.

+ In 1869, Landry wrote that no one of the numerous factorizations of the numbers 2n + 1 gave as much trouble and labor as that of 258 + 1.

+ The smallest Smith number with a prime sum of digits. Note also that its digits and their sum are a sequence of Fibonacci numbers. [Necula]

+ The 58th Lucas number plus 5858 is prime. This is the largest such number less than a thousand. [Opao]

+ 58 is a Hoax Number. 58 reversed (85) is a Hoax Number and 85 = 5 x 17. Note that 5 x 71 = 355 is also a Hoax Number. [Andrew]

(There are 4 curios for this number that have not yet been approved by an editor.)




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