Fibonacci sequence

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Maybe, but I'm still doing it on calculator, just pasting the numbers in... I added it again in the calculator just now and got the same thing, 6,356,306,993,006,846,248,183.

My methodology is:
1. Highlight and copy the whole 1st number.
2. Paste it into the Windows 7 bundled calculator.
3. Add a plus sign after the first number.
4. Highlight and copy the whole 2nd number.
5. Paste it into the calculator after the plus sign.
6. Hit the = button.
7. Highlight and copy the whole sum and paste it into a new thread post.
8. Add commas.
9. Post it.

With this process, I'm not sure where something would have went wrong.. I'm basically eliminating myself as a source of human error by doing it this way, because I'm doing no adding or work with the digits myself.

A list of the first 300 Fibonacci numbers lists the number we're worried about as entry #106, and it shows the number as being 6356306993006846248183.

http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/fibtable.html

The good news though is that it means we've been adding the numbers accurately up to this point.

Ah, my bad, then. My computer calculator does not go that far with the gigantic numbers.

Good to know we've been correct thus far!

Oh sad! That's right, I remember now. That's quite a difficulty too!

No worries, so your number would have been:

10,284,720,757,613,717,413,913

And now that makes my number:

16,641,027,750,620,563,662,096

This time I just pasted them straight from the chart I found, which I assume has been proof-read and endorsed.

26,925,748,508,234,281,076,009

43,566,776,258,854,844,738,105

Ok I'll copy and paste too

70,492,524,767,089,125,814,114

Can't go wrong that way, we're all on our own again when that list runs out, though!

114,059,301,025,943,970,552,219

184,551,825,793,033,096,366,333

298,611,126,818,977,066,918,552

483,162,952,612,010,163,284,885

781,774,079,430,987,230,203,437

1,264,937,032,042,997,393,488,322

1.2 Septillion, give or take a few.

yep, and once we complete the 300, we'll keep going with pencil and paper, won't we???

2,046,711,111,473,984,623,691,759

3,311,648,143,516,982,017,180,081

5,358,359,254,990,966,640,871,840

Yes, we'll keep on, although I expect my calculator trick to still work for me.

I think the trick is, if you're using Windows calculator you have to put it in Scientific Mode: