Consecutive numbers and consecutive prime factors

http://www.primepuzzles.net/puzzles/puzz_240.htm

Example:

384 = 2^7 * 3 .................................... 385 = 5 * 7 * 11

539 = 7^2 * 11 ................................... 540 = 2^2 * 3^3 * 5

Montessori : Education, Philosophy and Experiences

Google Founders discuss their experience as Montessori students

Proof that 22/7 exceeds π

http://en.wikipedia.org/wiki/Proof_that_22/7_exceeds_%CF%80

22/7 - π

http://www.wolframalpha.com/input/?i=22%2F7+-+%CF%80+

π - 223/71

http://www.wolframalpha.com/input/?i=+%CF%80+-+223%2F71

A history of π

http://www-history.mcs.st-and.ac.uk/HistTopics/Pi_through_the_ages.html

Feynman point

http://www.wolframalpha.com/input/?i=+Feynman+point

http://en.wikipedia.org/wiki/Feynman_point

Am I in Pi ?

http://www.facade.com/legacy/amiinpi/

Conjecture about sum of primes

1 + 2 + 2^2 + 2^3 + 2^4 = 1 + 5 + 5^2 = 31

Is this the only sum of this kind, using prime numbers?

(2) research with .... a + p + p^2 + p^3 + .... = a + ....

Squares which remain squares if you increment every digit by 1

http://oeis.org/A061843

0

25

2025

13225

4862025

60415182025

207612366025

153668543313582025

13876266042653742025

20761288044852366025

47285734107144405625

406066810454367265225

141704161680410868660551655625

Gilbreath’s Conjecture

http://www.futilitycloset.com/2011/03/25/gilbreaths-conjecture/

http://primes.utm.edu/glossary/page.php?sort=GilbreathsConjecture