This number is a prime.

+ A term in a decreasing sequence of primes leading to the first prime number, involving the recursive use of the prime counting function: π(5381) = 709, π(709) = 127, ... , π(3) = 2.

+ This prime can be expressed as the sum of squares of five consecutive primes, starting with 23. [Patterson]

(There are 2 curios for this number that have not yet been approved by an editor.)

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