#1120 · Number Theory · Digits

Square with invariant root digits

Show that the numeral $1234321$ is a perfect square in any radix greater than $4$ , and that its square root is always expressed by the same four digits.

~10 minProof · checked by AIperfect squareradix invariance

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. VII. Scales of Notation, Examples VII.b, No. 28

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