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Welcome to the OEIS wiki,
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Sequence of the Day
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A059801: Numbers such that is prime.
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{ 2, 3, 7, 17, 59, 283, 311, 383, 499, ... }
For example, 4 7 − 3 7 = 16384 − 2187 = 14197 and that is a prime number.
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Featured article (Check back later for today's.)
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OEIS lookup
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On this day...
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- February 3, 1774 Karl Brendan Mollweide is born in Wolfenbüttel.
- February 3, 1893 Gaston Maurice Julia is born in Sidi bel Abbès.
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Sequences in the news
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Sequences in the News
- Aug 17 2021 Swiss scientists announce they have calculated π (A000796) to 62.8 trillion digits in only 108 days.
- Dec 25 2018 German Heise-News "integers, please" column explains A003173 and OEIS.
- Feb 01 2018 Alphabet announced a $8,589,869,056 = $A000396(6) stock buyback.
- Jan 03 2018 Largest known term of A000043 announced: 77232917.
- Nov 18 2016 PrimeGrid proves that 10223 is not a Sierpinski number, since 10223 × 2 31172165 + 1 is prime. So no changes to A076336 for now.
- Sep 14 2016 Tom Greer discovers the twin primes 2996863034895 × 2 1290000 ± 1 using PrimeGrid, TwinGen and LLR.
- Jan 19 2016 Largest known term of A000043 announced: 74207281, also discovered by Curtis Cooper.
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Template:POTD protected/2025-02-02
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Related web sites
In case you would not find here what you are looking for (after a thorough search), you might want to visit some related web sites:
![{\displaystyle {\frac {\sqrt {3}}{\sqrt[{3}]{4}}}}](https://en.wikipedia.org/api/rest_v1/media/math/render/svg/82f69b84c5a71d0f3e7c6221323df1cf62fafb23)
![{\displaystyle {\sqrt[{4}]{7}}-{\sqrt[{4}]{5}}}](https://en.wikipedia.org/api/rest_v1/media/math/render/svg/14afe461aafa12d357358e61354b150f887acbaf)
