457

This number is a prime.

Just showing those entries submitted by 'Gaydos': (Click here to show all)

+ Is 457 the only Honaker prime for which its prime index (88) plus 666 is an anagram of the prime? [Gaydos]

+ The smallest prime number for which the reverse of its double is a smaller prime. [Gaydos]

+ The 457th Fibonacci number is a 96-digit number containing the digit 2 just once. Is this the largest Fibonacci number that has one or more unique digits? [Gaydos]

+ There are 457 squares that are each the sum of two consecutive distinct digit positive integers. [Gaydos]

+ The first Honaker prime with a repdigit prime index (88). [Gaydos]

(There is one curio for this number that has not yet been approved by an editor.)

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