Lets count in factorials

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jc6chan
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20 Jan 2010, 3:53 pm

1
1
2
6
24
120
720
5040

Woodfish
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20 Jan 2010, 5:46 pm

40,320

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richie
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20 Jan 2010, 5:55 pm

362880 = 2 ^ 7 x 3 ^ 4 x 5 x 7

The numbers are going to grow much larger and faster than they did on the Fibonacci
numbers thread.

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Keeno
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20 Jan 2010, 6:15 pm

3,628,800

richie
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20 Jan 2010, 6:34 pm

11!=39 916800 = 2 ^ 8 x 3 ^ 4 x 5 ^ 2 x 7 x 11

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jc6chan
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22 Jan 2010, 12:14 pm

12!=479001600

richie
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22 Jan 2010, 4:52 pm

13!=6227 020800 = 2 ^ 10 x 3 ^ 5 x 5 ^ 2 x 7 x 11 x 13

Number of divisors: 1584

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jc6chan
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22 Jan 2010, 5:13 pm

14!=8.71782912E10

Woodfish
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23 Jan 2010, 2:04 am

15!=1,307,674,368,000

jc6chan
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23 Jan 2010, 2:13 pm

16!=2.092278989E13

richie
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23 Jan 2010, 3:45 pm

17!=355 687428 096000 = 2 ^ 15 x 3 ^ 6 x 5 ^ 3 x 7 ^ 2 x 11 x 13 x 17

Number of divisors: 10752

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jc6chan
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23 Jan 2010, 5:56 pm

18!=6.402373706E15

richie
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23 Jan 2010, 6:00 pm

19!=121645 100408 832000 = 2 ^ 16 x 3 ^ 8 x 5 ^ 3 x 7 ^ 2 x 11 x 13 x 17 x 19

Number of divisors: 29376

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dddhgg
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23 Jan 2010, 6:30 pm

20! = 2432902008176640000

By the way, richie, how do you obtain all your arithmetical info (divisors and stuff)?

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richie
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24 Jan 2010, 4:54 pm

21!=51 090942 171709 440000 = 2 ^ 18 x 3 ^ 9 x 5 ^ 4 x 7 ^ 3 x 11 x 13 x 17 x 19

Number of divisors: 60800

Quote:

By the way, richie, how do you obtain all your arithmetical info (divisors and stuff)?

I use this site for calculating and factoring extremely large numbers such as the ones in the
Fibonacci numbers thread:

http://www.alpertron.com.ar/ECM.HTM

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dddhgg
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24 Jan 2010, 5:02 pm

richie wrote:

21!=51 090942 171709 440000 = 2 ^ 18 x 3 ^ 9 x 5 ^ 4 x 7 ^ 3 x 11 x 13 x 17 x 19

Number of divisors: 60800

Quote:

By the way, richie, how do you obtain all your arithmetical info (divisors and stuff)?

I use this site for calculating and factoring extremely large numbers such as the ones in the
Fibonacci numbers thread:

http://www.alpertron.com.ar/ECM.HTM

Thanks! I'll check it out.

22! = 1124000727777607680000

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