Prime numbers | Integer sequences

Interprime

In mathematics, an interprime is the average of two consecutive odd primes. For example, 9 is an interprime because it is the average of 7 and 11. The first interprimes are: 4, 6, 9, 12, 15, 18, 21, 26, 30, 34, 39, 42, 45, 50, 56, 60, 64, 69, 72, 76, 81, 86, 93, 99, ... (sequence in the OEIS) Interprimes cannot be prime themselves (otherwise the primes would not have been consecutive). There are infinitely many primes and therefore also infinitely many interprimes. The largest known interprime as of 2018 may be the 388342-digit n = 2996863034895 · 21290000, where n + 1 is the largest known twin prime. (Wikipedia).

Video thumbnail

Interstellar flight: 10 Hard Facts

We can build powerful rockets able to carry people and machines into orbit, or even vault them to the moon. But our fastest spacecraft don't hold a candle to the distances that define Interstellar Flight. So what's on the drawing boards? What futuristic designs and fuel options promise to

From playlist Spaceten

Video thumbnail

Can You Believe It? #9 Could "Interstellar" (Movie) be the End of Our World Scenario?

Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 Does the movie “Interstellar” depict a plausible scenario for “The End of the World”? Previous video in this series can be seen at:

From playlist CAN YOU BELIEVE IT?

Video thumbnail

What are parallel lines and a transversal

👉 Learn about converse theorems of parallel lines and a transversal. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry, parallel lines are identified by two arrow heads or two small lines indicated i

From playlist Parallel Lines and a Transversal

Video thumbnail

What are the Angle Relationships for Parallel Lines and a Transversal

👉 Learn about converse theorems of parallel lines and a transversal. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry, parallel lines are identified by two arrow heads or two small lines indicated i

From playlist Parallel Lines and a Transversal

Video thumbnail

What Is The Interplanetary Transport Network? Free Travel Across the Solar System

Sure, if you've got lots of energy, you can zip around the Solar System. But if you’ve got time and rocket fuel is in short supply, you can take the Interplanetary Superhighway. References: http://www2.esm.vt.edu/~sdross/papers/AmericanScientist2006.pdf http://www.gg.caltech.edu/~mwl/publ

From playlist The Solar System

Video thumbnail

What is spacetime?

"Subscribe to our YouTube Channel for all the latest from World Science U. Visit our Website: http://www.worldscienceu.com/ Like us on Facebook: https://www.facebook.com/worldscienceu Follow us on Twitter: https://twitter.com/worldscienceu"

From playlist Science Unplugged: Special Relativity

Video thumbnail

What are Consecutive Interior Angles

👉 Learn how to define angle relationship. Do you know the difference between interior and exterior angles? What is the relationship between parallel lines and transversal? When given parallel lines and a transversal we can label and identify many different types of angles such as alternate

From playlist Parallel Lines and a Transversal

Video thumbnail

What is the Alternate Exterior Angle Converse Theorem

👉 Learn about converse theorems of parallel lines and a transversal. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry, parallel lines are identified by two arrow heads or two small lines indicated i

From playlist Parallel Lines and a Transversal

Video thumbnail

What is the Consecutive Interior Angle Converse Theorem

👉 Learn about converse theorems of parallel lines and a transversal. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry, parallel lines are identified by two arrow heads or two small lines indicated i

From playlist Parallel Lines and a Transversal

Video thumbnail

Astronomy - Ch. 18: The Birth of Stars (6 of 11) Content of Interstellar Medium (ISM)

Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn what elements make up the content of the interstellar medium (ISM) or the “stuff” that's in between the stars. Next vi

From playlist ASTRONOMY 18 THE BIRTH OF STARS

Related pages

Sexy prime | Prime number | Prime gap | Balanced prime | Mathematics | Twin prime | Cousin prime | Arithmetic mean