Your number, one digit away

One digit away

One change could reach Singular.

Position 3: 8 → 7 · +198 points.

Gained: Fibonacci number, 2 distinct digits, Digit sum 17, Semiprime, Repeated digit.

Lost: Triangular number, Digit sum 18, 3 distinct digits, Harshad number.

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