Power Function Oddity

[DA74254]

Hmm, let me edit my answer a little.
Both *may* be correct. Depending on how you "set up" your expression.

By ^4 for each intermediate calculation, you get a first level exponetiation, whereas, if you "stack" the ^4's you'll get a really high number.

Your latter answer would be 4^4=256^4=4294967296^4=340282366920938463463374607431768211456.

But the "stacking would equal 4^134078079299425970995740249982058461274793658205923933777235614437217640\
300735469768018742981669034276900318581864860508537538828119465699464336490060\
84096

Edit:
Here's the link to WA: https://www.wolframalpha.com/input/?i=4%5E4%5E4%5E4