Counting by Fibonacci Numbers (if you can)

iomoon · **Posted:** Wed Jul 28, 2010 08:44:31 am

73,681,302,247

nigelc · **Posted:** Wed Jul 28, 2010 08:46:28 am

someone added the wrong two numbers together... :lol:

86,267,571,272

(getting close to 14!)

iomoon · **Posted:** Wed Jul 28, 2010 08:54:01 am

159,948,873,519

nigelc · **Posted:** Wed Jul 28, 2010 09:00:57 am

iomoon, you're being true to the algorithm but not to the sequence!

Bedtime for me now - it's too late for arithmetic!

Good game muruk!

iomoon · **Posted:** Wed Jul 28, 2010 09:25:40 am

Sorry, lets try

139,583,862,444

Diver Pete · **Posted:** Wed Jul 28, 2010 11:16:23 am

F(36) = 3 x 72 x 13 x 29 x 281 x 14503 =

225,851,433,717

GUTTERS · **Posted:** Wed Jul 28, 2010 16:06:32 pm

iomoon wrote:

Sorry, lets try

139,583,862,444

139,583,862,445

GUTTERS · **Posted:** Wed Jul 28, 2010 16:09:55 pm

365,435,296,162

GUTTERS · **Posted:** Wed Jul 28, 2010 16:12:27 pm

591,286,729,879

Diver Pete · **Posted:** Wed Jul 28, 2010 21:17:39 pm

F(59) = 353 x 2710260697 =

956,722,026,041

GUTTERS · **Posted:** Wed Jul 28, 2010 22:21:39 pm

1,548,008,755,920

MrSamoa · **Posted:** Wed Jul 28, 2010 23:32:49 pm

2,504,730,781,961

iomoon · **Posted:** Thu Jul 29, 2010 09:53:07 am

4,052,739,537,881

Diver Pete · **Posted:** Thu Jul 29, 2010 12:33:09 pm

F(63) = 2 x 13 x 17 x 421 x 35239681 =

6,557,470,319,842

MrSamoa · **Posted:** Thu Jul 29, 2010 12:35:59 pm

10,610,209,857,723

Diver Pete · **Posted:** Thu Jul 29, 2010 12:47:36 pm

F(64) = 3 x 7 x 47 x 1087 x 2207 x 4481 =

10,610,209,857,723

mrboggler · **Posted:** Thu Jul 29, 2010 13:35:56 pm

Now all you need do is write the cheque. :lol:

MrSamoa · **Posted:** Thu Jul 29, 2010 23:05:01 pm

17,167,680,177,565

GlenStephens · **Posted:** Thu Jul 29, 2010 23:11:32 pm

My head hurts .................... :shock:

muruk · **Posted:** Fri Jul 30, 2010 01:40:09 am

GlenStephens wrote:

My head hurts .................... :shock:

Why

you seem to be able to handle polygazillion dollar Zimbabwean banknotes OK :lol:

hatter · **Posted:** Sat Jul 31, 2010 05:07:47 am

27,777,890,035,268

:mrgreen:

Diver Pete · **Posted:** Sat Jul 31, 2010 08:30:28 am

hatter wrote:

27,777,890,035,268

:mrgreen:

Nearly!

27,777,890,035,288 = 23 x 89 x 199 x 9901 x 19801

Diver Pete · **Posted:** Sat Jul 31, 2010 08:32:22 am

F(67) = 269 x 116849 x 1429913 =

44,945,570,212,853

iomoon · **Posted:** Sat Jul 31, 2010 08:38:44 am

I think most of the mistakes are finger slips rather than mathematical miscalculations.

I could be wrong.

jugoslavija_post · **Posted:** Sat Jul 31, 2010 08:42:13 am

72,723,460,248,141

mrboggler · **Posted:** Sat Jul 31, 2010 08:44:58 am

No finger slips,,, my pocket caculator only goes up to 8 digits. :shock:

I can,t even say the ********** number never mind add them together,,,

This thread is only for Brainiacs. :lol:

iomoon · **Posted:** Sat Jul 31, 2010 09:54:30 am

Pocket calculator????????????????????????

We are doing these in our heads.

:wink:

Diver Pete · **Posted:** Sat Jul 31, 2010 10:37:52 am

Just like reading the numbers from an ATM receipt from Zimbabwe :!:

F(69) = 2 x 137 x 829 x 18077 x 28657 =

117,669,030,460,994

GUTTERS · **Posted:** Sat Jul 31, 2010 10:48:37 am

190,382,490,709,135

Diver Pete · **Posted:** Sat Jul 31, 2010 11:18:34 am

F(71) = 6673 x 46165371073 =

308,061,521,170,129

GUTTERS · **Posted:** Sat Jul 31, 2010 11:35:16 am

498,444,011,879,264

Diver Pete · **Posted:** Sat Jul 31, 2010 14:29:02 pm

806,515,533,049,393

GUTTERS · **Posted:** Sat Jul 31, 2010 19:29:51 pm

1,304,959,544,928,657

GUTTERS · **Posted:** Sat Jul 31, 2010 19:38:02 pm

I think this is right

One thousand three hundred and four billion nine hundred and fifty nine thousand five hundred and forty four million nine hundred and twenty eight thousand six hundred and fifty seven

muruk · **Posted:** Sat Jul 31, 2010 19:58:29 pm

GUTTERS wrote:

I think this is right

One thousand three hundred and four billion nine hundred and fifty nine thousand five hundred and forty four million nine hundred and twenty eight thousand six hundred and fifty seven

You probably need to qualify that by adding that you are counting in British. For USA citizens it would be: One thousand three hundred and four trillion nine hundred and fifty nine billion five hundred and forty four million nine hundred and twenty eight thousand six hundred and fifty seven.

In New Zillund it would be Wun thousind ... never mind ...

Incidentally ... what should we call an inhabitant of the USA? "American" simply is not correct.

Every third Fibonacci number is even.

2,111,475,077,978,050

hatter · **Posted:** Sat Jul 31, 2010 20:06:50 pm

sorry about my posting yesteday.
have gone back to my workings, on a bit of paper as the numbers are too big for the spreadsheet, the last 3 digits are 288, but badly written and I typed the middle 8 as a 6 :oops:

muruk · **Posted:** Sat Jul 31, 2010 20:31:38 pm

hatter wrote:

sorry about my posting yesteday.
have gone back to my workings, on a bit of paper as the numbers are too big for the spreadsheet, the last 3 digits are 288, but badly written and I typed the middle 8 as a 6 :oops:

Reminds me of early days in Fortran programming. Computers could only handle a limited number of digits. For precision in long numbers we had to break the numbers into components, say, six digits long, then write an algorithm to perform the operations (multiplication, division, whatever), and correctly reassemble the partial results to get the final solution. Will be interesting to see how far we get in this thread ... of course, we can always revert to manual calculations.

Anyone want to try counting by factorials?

hatter · **Posted:** Sat Jul 31, 2010 20:37:04 pm

3,416,434,622,906,707

just hope i copied it correctly this time !

Fortran , I worked with 'Plan' on ICL then Assmbler on IBM machines, way back

Diver Pete · **Posted:** Sun Aug 01, 2010 00:22:46 am

Sorry hatter but 3,416,454,622,906,707 :wink:

F(77) = 13 x 89 x 988681 x 4832521 =

5,527,939,700,884,757

Diver Pete · **Posted:** Sun Aug 01, 2010 00:27:16 am

muruk wrote:

Every third Fibonacci number is even.

Very true! Which makes every first and second odd...

Probably not as odd as us....

Diver Pete · **Posted:** Sun Aug 01, 2010 00:31:26 am

muruk wrote:

Anyone want to try counting by factorials?

Lead away muruk...

Just for the exercise, I have been factoring my Fibonacci numbers....

F(78) = 23 x 79 x 233 x 521 x 859 x 135721 =

8,944,394,323,791,464

hatter · **Posted:** Sun Aug 01, 2010 00:39:41 am

Doing it the adding up previous nos, not long multiplication

1,304,959,544,928,657 +
2,111,475,077,978,050
=
3,416,434,622,906,707

so is one of the component numbers wrong?

Diver Pete · **Posted:** Sun Aug 01, 2010 00:46:45 am

1,304,969,544,928,657 +
2,111,485,077,978,050
=
3,416,454,622,906,707

hatter, sorry but there was a mistake in the number posted by GUTTERS :wink:

Diver Pete · **Posted:** Sun Aug 01, 2010 00:51:10 am

In fact GUTTERS had a mistake in an earlier posting:

498,444,011,879,264

Should have been:

498,454,011,879,264

GUTTERS · **Posted:** Sun Aug 01, 2010 02:45:07 am

It was the 9.48 post were I had to add across a couple of text posts to get my answer sorry guys here is the fix up

190392490709135
308061521170129
498454011879264
806515533049393
1304969544928657
2111485077978050
3416454622906707
5527939700884757
8944394323791464
14472334024676221

Diver Pete · **Posted:** Sun Aug 01, 2010 08:10:11 am

Appology accepted :!:

23,416,728,348,467,685

nigelc · **Posted:** Sun Aug 01, 2010 08:21:14 am

37,889,062,373,143,906

Diver Pete · **Posted:** Sun Aug 01, 2010 10:07:58 am

61,305,790,721,611,591

Diver Pete · **Posted:** Sun Aug 01, 2010 10:10:00 am

Sorry for being a sad bastard but the next Fibonacci number is special as it is a prime number.

This is Fibonacci (F) 83 and the next prime F number is F131... :shock:

99,194,853,094,755,497

nigelc · **Posted:** Sun Aug 01, 2010 10:16:13 am

160,500,643,816,367,088


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Counting by Fibonacci Numbers (if you can)

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