Special whole numbers... - Page 7

Uncwilly · 2003-08-20, 05:26

33550336=(2^12)*(2^13-1) (2^13-1 is prime) 8)

302875106592253

hyh1048576 · 2003-08-20, 05:56

302875106592253 = 13^13

Do not always factor the numbers~ :(
What I mean by 233333(I post it yesterday) is :
2 is a prime
23 is a prime
233 is a prime
2333 is a prime
23333 is a prime
233333 = 353*661 ;)

1331177147

eratos · 2003-08-20, 06:25

33550336 is the 5th even perfect number!! 8)

1331177147 is a prime! :) And it is also the concatenation of 3^11 and 11^3. :D

http://primes.utm.edu/curios/page.php?number_id=2298

98689

S80780 · 2003-08-20, 08:00

98689 is a (base-10-) palindromic prime.

2

cheesehead · 2003-08-20, 10:29

2 was proven to equal the sum 1 + 1 by Bertrand Russell and Alfred North Whitehead on page 362 of their book Principia Mathematica.

Alternatively:

"...
Two can be as bad as one
It's the loneliest number since the number one
..."
-- from the song One, by Three Dog Night

1801

Uncwilly · 2003-08-20, 13:15

1801 The year that the White House was first occupied.

6227020787

ET_ · 2003-08-20, 13:34

Quote:

-- from the song One, by Three Dog Night

Wasn't it the same song in "Magnolia" soundtrack?

Uncwilly · 2003-08-21, 16:32

Clue for 6227020787 see my favorite number mentioned previously.

andi314 · 2003-08-21, 17:01

6227020787 = 13* (12! - 1)

where 12! = 12 * 11 * 10 * ..... * 3 * 2 * 1

next number:
4053946

andi314

smh · 2003-08-21, 18:15

4053946 Number of digits in the largest known prime.

1398269

nomadicus · 2003-08-21, 18:53

M35

99999999899999999

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2003-08-20, 05:26	#67
Uncwilly 6809 > 6502 """"""""""""""""""" Aug 2003 101×103 Posts 2³·1,223 Posts	33550336=(2^12)*(2^13-1) (2^13-1 is prime) 8) 302875106592253

2003-08-20, 05:56	#68
hyh1048576 Jun 2003 2⁶ Posts	302875106592253 = 13^13 Do not always factor the numbers~ :( What I mean by 233333(I post it yesterday) is : 2 is a prime 23 is a prime 233 is a prime 2333 is a prime 23333 is a prime 233333 = 353*661 ;) 1331177147

2003-08-20, 06:25	#69
eratos Aug 2002 2·3 Posts	33550336 is the 5th even perfect number!! 8) 1331177147 is a prime! :) And it is also the concatenation of 3^11 and 11^3. :D http://primes.utm.edu/curios/page.php?number_id=2298 98689

2003-08-20, 08:00	#70
S80780 Jan 2003 far from M40 5³ Posts	98689 is a (base-10-) palindromic prime. 2

2003-08-20, 10:29	#71
cheesehead "Richard B. Woods" Aug 2002 Wisconsin USA 2²·3·641 Posts	2 was proven to equal the sum 1 + 1 by Bertrand Russell and Alfred North Whitehead on page 362 of their book Principia Mathematica. Alternatively: "... Two can be as bad as one It's the loneliest number since the number one ..." -- from the song One, by Three Dog Night 1801

2003-08-20, 13:15	#72
Uncwilly 6809 > 6502 """"""""""""""""""" Aug 2003 101×103 Posts 2³·1,223 Posts	1801 The year that the White House was first occupied. 6227020787

2003-08-21, 16:32	#74
Uncwilly 6809 > 6502 """"""""""""""""""" Aug 2003 101×103 Posts 2³·1,223 Posts	Clue for 6227020787 see my favorite number mentioned previously.

2003-08-21, 17:01	#75
andi314 Nov 2002 112₈ Posts	6227020787 = 13* (12! - 1) where 12! = 12 * 11 * 10 * ..... * 3 * 2 * 1 next number: 4053946 andi314

2003-08-21, 18:15	#76
smh "Sander" Oct 2002 52.345322,5.52471 29×41 Posts	4053946 Number of digits in the largest known prime. 1398269

2003-08-21, 18:53	#77
nomadicus Jan 2003 North Carolina 2·3·41 Posts	M35 99999999899999999