37 (thirty-seven) is the natural number following 36 and preceding 38.

In mathematics

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

The 37 Cluster
  • NGC 2169 is known as the 37 Cluster, due to its resemblance of the numerals.

References

  1. ^ 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.
  2. ^ "Sloane's A000928: Irregular primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
  • 37 Heaven Large collection of facts and links about this number.
Allikas: https://en.wikipedia.org/wiki/37_(number)
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