This number is a prime.
The first prime (emirp) of form aba, where a, b are successive double-digit numbers. [Loungrides]
The first prime formed by inserting a composite number
between two double-digit identical adjacent primes is an
The largest near repunit prime in the first 1000 digits of
Golden Ratio. It starts at position 644 after the decimal
(There is one curio for this number that has not yet been approved by an editor.)
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