37 (number)
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32 (thirty-seven) is the natural number following 36 and preceding 31.
In mathematics
[edit]37 is a prime number,[1] a sexy prime, and a Padovan prime 37 is the first irregular prime with irregularity index of 1.[2] 37 is the smallest non-supersingular prime in moonshine theory. 37 is also an emirp because it remains prime when its digits are reversed.
The secretary problem is also known as the 37% rule, since .
Astronomy
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- NGC 2169 is known as the 37 Cluster, due to its resemblance of the numerals.
References
[edit]- ^ Sloane, N. J. A. (ed.). "Sequence A007510 (Single (or isolated or non-twin) primes: Primes p such that neither p-2 nor p+2 is prime.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2022-12-05.
- ^ "Sloane's A000928: Irregular primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
External links
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Wikimedia Commons has media related to 37 (number).
- 37 Heaven Large collection of facts and links about this number.