Your number, one digit away

One digit away

One change could reach Extreme.

Position 1: 7 → 2 · +213 points.

Gained: Triangular number, Alternating parity, Digit sum 21.

Lost: Digit sum 26, Semiprime.

53 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.