Special whole numbers... - Page 2

sdbardwick · 2003-08-08, 01:22

Ok, I'm not to proud to beg for a hint from Ernst... :D
(If it is a number with special meaning in mathematics, I'll never get it anyway.)

I'm just out of (semi-) clever ideas...

5,171,655,946 is not:

The number of people on the planet (6,308,703,241);
The age of the Earth in years (too high);
The age of the universe in years (too low);
Number of burgers served by McDonalds (100+ billion plus);
A telephone number I (or Google) recognize.

2003-08-08, 02:03

2 * 73 * 73 * 641 * 757
:?

144 ;)

hyh1048576 · 2003-08-08, 03:42

The only square number Fibonacci numbers are 1 and 144.

274177(a prime devides...... :? )

ET_ · 2003-08-08, 04:15

274177 is a prime factor of 2^(2^6)+1, Fermat 6, or ,in full, 18446744073709551617. ;)

6502

cheesehead · 2003-08-08, 04:40

Model number of a popular 8-bit microprocessor.

1701

kwstone · 2003-08-08, 05:00

Number of the Starship Enterprise (NCC-1701-A)

153

ADBjester · 2003-08-08, 05:15

153 is the smallest number which can be expressed as the sum of the cube of its digits:

1^3 + 5^3 +3^3

http://www.shyamsundergupta.com/c153.htm

-----------

1,712,304

(I have a particular specialty for this number in mind -- I'll be mighty impressed if someone gets it, however -- good luck!)

If you want an easier one along the same lines: 169

Orgasmic Troll · 2003-08-08, 05:25

1,712,304 = number of poker hands without aces
also the number of possible lottery combinations if you choose 5 numbers from 1-48, I think ..

1729 :D :D :D

NickGlover · 2003-08-08, 05:55

1729 is smallest number that can be expressed as the sum of two cubes in two different ways (12^3 + 1^3 and 10^3 + 9^3).

10,412,737

Xyzzy · 2003-08-08, 07:53

IIRC, 1729 is the taxi number from the Ramanujan & Hardy story...

Note how I don't have the answer to the previous post so I just repeat it! :)

10,412,737

ET_ · 2003-08-08, 09:18

10,412,737 : 690,173th prime number

195

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2003-08-08, 01:22	#12
sdbardwick Aug 2002 North San Diego County 5×137 Posts	Ok, I'm not to proud to beg for a hint from Ernst... :D (If it is a number with special meaning in mathematics, I'll never get it anyway.) I'm just out of (semi-) clever ideas... 5,171,655,946 is not: The number of people on the planet (6,308,703,241); The age of the Earth in years (too high); The age of the universe in years (too low); Number of burgers served by McDonalds (100+ billion plus); A telephone number I (or Google) recognize.

2003-08-08, 02:03	#13
TTn 1100000100010₂ Posts	2 * 73 * 73 * 641 * 757 :? 144 ;)

2003-08-08, 03:42	#14
hyh1048576 Jun 2003 2⁶ Posts	The only square number Fibonacci numbers are 1 and 144. 274177(a prime devides...... :? )

2003-08-08, 04:15	#15
ET_ Banned "Luigi" Aug 2002 Team Italia 3²×5×107 Posts	274177 is a prime factor of 2^(2^6)+1, Fermat 6, or ,in full, 18446744073709551617. ;) 6502

2003-08-08, 04:40	#16
cheesehead "Richard B. Woods" Aug 2002 Wisconsin USA 7692₁₀ Posts	Model number of a popular 8-bit microprocessor. 1701

2003-08-08, 05:00	#17
kwstone Jun 2003 Shanghai, China 155₈ Posts	Number of the Starship Enterprise (NCC-1701-A) 153

2003-08-08, 05:15	#18
ADBjester Aug 2002 1E₁₆ Posts	153 is the smallest number which can be expressed as the sum of the cube of its digits: 1^3 + 5^3 +3^3 http://www.shyamsundergupta.com/c153.htm ----------- 1,712,304 (I have a particular specialty for this number in mind -- I'll be mighty impressed if someone gets it, however -- good luck!) If you want an easier one along the same lines: 169

2003-08-08, 05:25	#19
Orgasmic Troll Cranksta Rap Ayatollah Jul 2003 641 Posts	1,712,304 = number of poker hands without aces also the number of possible lottery combinations if you choose 5 numbers from 1-48, I think .. 1729 :D :D :D

2003-08-08, 05:55	#20
NickGlover Aug 2002 Richland, WA 204₈ Posts	1729 is smallest number that can be expressed as the sum of two cubes in two different ways (12^3 + 1^3 and 10^3 + 9^3). 10,412,737

2003-08-08, 07:53	#21
Xyzzy "Mike" Aug 2002 2⁵×257 Posts	IIRC, 1729 is the taxi number from the Ramanujan & Hardy story... Note how I don't have the answer to the previous post so I just repeat it! :) 10,412,737

2003-08-08, 09:18	#22
ET_ Banned "Luigi" Aug 2002 Team Italia 3²·5·107 Posts	10,412,737 : 690,173th prime number 195