This number is a prime.

+ The last of eight consecutive primes of the form k! + nextprime(k), for k = 0 through 7. [Merickel]

+ 50^50 + 51^51 ends with 5051. It is the only known prime with this property. [Loungrides]

+ The smallest prime formed from the concatenation in order of two successive composite double-digit numbers. [Loungrides]

(There are 3 curios for this number that have not yet been approved by an editor.)

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