## You are here

HomeAndrew Odlyzko

## Primary tabs

# Andrew Odlyzko

*Andrew Odlyzko* is a mathematician best known for disproving the Mertens conjecture with Herman J. J. te Riele. Odlyzko co-authored “On the Density of Odd Integers of the Form $\displaystyle\frac{(p-1)}{2k}$ and Related Questions” in J. of Number Theory 11 (1979) with Paul Erdős, and thus has Erdős number 1. Odlyzko studied at the Massachusetts Institute of Technology.

Type of Math Object:

Biography

Major Section:

Reference

Groups audience:

## Mathematics Subject Classification

01A61*no label found*01A60

*no label found*01A65

*no label found*

- Forums
- Planetary Bugs
- HS/Secondary
- University/Tertiary
- Graduate/Advanced
- Industry/Practice
- Research Topics
- LaTeX help
- Math Comptetitions
- Math History
- Math Humor
- PlanetMath Comments
- PlanetMath System Updates and News
- PlanetMath help
- PlanetMath.ORG
- Strategic Communications Development
- The Math Pub
- Testing messages (ignore)

- Other useful stuff
- Corrections

## Comments

## Odlyzko's birth year

Would anyone happen to have at least some rough idea of when Odlyzko was born? The brief bio on his website would indicate he's at least 26 years old. Very tight-lipped about this for some reason.

## Re: Odlyzko's birth year

At the First Monday conference a few months ago, I met Odlyzko in

person. While I don't know his age, I can tell you he's a lot

older than 26! He looked more like twice that age to me. Joe and

Aaron were there with me; maybe they are better at guessing ages

then me and can come up with a good guess.

## Re: Odlyzko's birth year

> Would anyone happen to have at least some rough idea of when

> Odlyzko was born? The brief bio on his website would

> indicate he's at least 26 years old. Very tight-lipped about

> this for some reason.

The first publication he lists on his site is from 1970, so he must be at least 36 years old. :P

## Re: MANGAMMAL PRIMES

To know more about these Google OEIS and see

Seq A123239.

A.K.Devaraj

## Re: MANGAMMAL PRIMES

Several questions:

1) Why are they called "mangammal"?

2) Do you mean 3^(n - 2) or (3^n) - 2?

3) Who is the author of ISBN 1550-3747? Is that ISBN number complete?

4) What's one interesting thing about these primes?

## Re: MANGAMMAL PRIMES

1) "Mangammal" is the name of my late mother

2) Your second option is right

3) This is the reference No of Hawaii Intl Conference on

Statistics,Mathematics & related fields

4) Excepting 2^n-1 all exponential functions with the shape

a^n + c (a & c belong to N and are fixed; n is a variable belonging

to N) have a set of "impossible factors"; Mangammal primes is

only a demo of this.

A.K.Devaraj

## Re: MANGAMMAL PRIMES

A MINOR CORRECTION

c belongs to Z and not N.

Devaraj

## Re: MANGAMMAL PRIMES

How do I add "Mangammal Primes" to Maths Encyclopedia pl?

A.K.Devaraj

## Re: MANGAMMAL PRIMES

Go at

http://planetmath.org/browse/objects/11A41/

Choose: 44. prime

Roll down to the bottom at the Interact bar and choose: add(any).

Once you're there do the following.

Type: choose: Topic

Title: Mangammal primes (if Mamgamal is not a proper name, then write mamgammal)

Attached to (if applicable): Leave it in blank (remove Prime)

Classification (See MSC): msc:11A41 (it is ready, leave it so)

Roll down to:

Content (edit your LaTeX here. See PlanetMath Content and Style Guide , or Syntax Help ): (this is the blank LaTex page where you will write)

Begin to write your entry.

## Re: MANGAMMAL PRIMES

Thank you very much.I will try to follow your instructions; hope

I succeed.

A.K.Devaraj

## Re: MANGAMMAL PRIMES

A. K. Devaraj,

you entry does not render for page images and HTML with images mode, but I see its source text. Seems interesting!

Please put the dollar signs only in math expressions, i.e. now edit your entry to the form

Mangammal primes (named after my late mother) are the impossible prime factors of $3^n-2$. See the sequence A123239 of OEIS.

Please, add some exemples, too.

Regards,

Jussi

## Re: MANGAMMAL PRIMES

If you don't know TeX, PM has a pretty good guide: http://planetmath.org/?op=getobj&from=collab&id=120 Though it's still incomplete in regards to calculus, it should have everything you need as far as topics in elementary number theory are concerned.

## Re: MANGAMMAL PRIMES

Thank you very much.I have successfully entered "Mangammal primes" in the Encyclopedia.I forgot to add that they are named after my late mother,Mangammal.

A.K.Devaraj

## Re: MANGAMMAL PRIMES

You are welcome! But born twins.

perucho

## Re: MANGAMMAL PRIMES

I think I have finally edited successfully both "Mangammal primes" and "Shantha primes".I have also deleted the superfluous entries.

I would like to thank all those who helped me to do so.

A.K.Devaraj