## Music model for prime numbers

Expand Messages
• In this music model, the prime integers fall on the silences. 2 is the first positive prime integer. Imagine, starting with 2, making a drumbeat, every second
Message 1 of 3 , Aug 27, 2009
In this music model, the prime integers fall on the silences.

2 is the first positive prime integer.

Imagine, starting with 2, making a drumbeat, every second time.
No sound is heard at 3.
3 is the second positive prime integer.
Starting at 3, make a drumbeat, every third time.

At 4 we hear the drumbeat started at 2.

No sound is heard at 5.

5 is the third positive prime integer.

Starting at 5, make a drumbeat every 5th time.

At 6, we hear the two drumbeats, one started at 2, and one started at 3.

No sound is heard at 7.
7 is the fourth positive prime integer.
Starting at 7, make a drumbeat every 7th time.

etc
• ... You can hear something similar to that here http://primes.utm.edu/programs/music/listen/page5.html CC ... From: primenumbers@yahoogroups.com
Message 2 of 3 , Aug 27, 2009
> Imagine, starting with 2, making a drumbeat, every second time.

You can hear something similar to that here

http://primes.utm.edu/programs/music/listen/page5.html

CC

-----Original Message-----
On Behalf Of Kermit Rose
Sent: Thursday, August 27, 2009 12:00 PM
Subject: [PrimeNumbers] Music model for prime numbers

In this music model, the prime integers fall on the silences.

2 is the first positive prime integer.

Imagine, starting with 2, making a drumbeat, every second time.
No sound is heard at 3.
3 is the second positive prime integer.
Starting at 3, make a drumbeat, every third time.

At 4 we hear the drumbeat started at 2.

No sound is heard at 5.

5 is the third positive prime integer.

Starting at 5, make a drumbeat every 5th time.

At 6, we hear the two drumbeats, one started at 2, and one started at 3.

No sound is heard at 7.
7 is the fourth positive prime integer.
Starting at 7, make a drumbeat every 7th time.

etc

------------------------------------

Unsubscribe by an email to: primenumbers-unsubscribe@yahoogroups.com
The Prime Pages : http://www.primepages.org/

• How rare is it to have 3 prime numbers concatenated left-to-right or right-to-left and still gives you primes?   And if all primes are additive primes (i.e.
Message 3 of 3 , Sep 1, 2009
How rare is it to have 3 prime numbers concatenated left-to-right or right-to-left and still gives you primes?

And if all primes are additive primes (i.e. having prime digit sums) than how rare that would be?

Example:
7          with  7=7
29         with  2+9=11
139       with  1+3+9=13
729139  with  7+2+9+1+3+9=31
139297  with  1+3+9+2+9+7=31

Any rough extimate will be do.

Thank you.