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43 (number)
| Field | Value |
|---|---|
| number | 43 |
| factorization | prime |
| prime | 14th |
| divisor | 1, 43 |
43 (forty-three) is the natural number following 42 and preceding 44.
Mathematics
43 is a prime number, and a twin prime of 41. 43 is the smallest prime that is not a Chen prime. 43 is also a Wagstaff prime, and a Heegner number. 43 is the fourth term of Sylvester's sequence.
43 is the largest prime which divides the order of the Janko group J4.
Dutch mathematician Hendrik Lenstra wrote a mathematical research paper discussing the properties of the number, titled Ode to the number 43.
Notes
References
- {{Cite OEIS
- {{Cite OEIS. A003173. Heegner numbers
- {{Cite OEIS
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