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Comment by acidburnNSA | Hacker News Reader

Just tried the TI-89 emulator on android and it says 1e100 + 1 - 1e100 is 0

Here I got 1 as the answer:

Aha! So 1e100 doesn't work but 1^100 does. Ok thanks!

1^100 = 1 though

That's a typo in the response, I believe. The screenshot shows 10^100 (10 to the power of 100).

1e100 is a float.

HP42 on Android checks out

My favorite Android calculator is RealCalc. I've been using it since I got it for PalmOS about 25 years ago.

I use it too, but it also computes 0 instead of 1 for:

    e^100 + 1 - e^100