Your number, one digit away

One digit away

One change could reach Extreme.

Position 3: 6 → 4 · +129 points.

Gained: Triangular number, Digit sum 21, Double pair, Harshad number, 4 distinct digits.

Lost: Descending segment, Digit sum 23, Prime, 5 distinct digits, Repeated digit.

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