The smallest four-digit prime such that the following form is
also prime: 1427 + 1427 + 1427. [Patterson]
The smallest increasing concatenation of 1^1 then 2^2 then...then n^n that is prime, starting with 1. [Patterson]
The smallest prime starting with a composite number and followed by its prime factors. [Firoozbakht]
There are exactly 1427 amicable pairs whose members have
ten or less digits. Note that 1427 itself belongs both to a
twin prime pair (1427, 1429) and to a cousin prime pair
(1423, 1427). [Beedassy]
The admission number of the celebrated French poet Arthur
Rimbaud to the "Hôpital de la Conception" (Marseille),
where he had the right leg amputated for osteosarcoma. [Olry]
(There are 2 curios for this number that have not yet been approved by an editor.)
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