Your number, one digit away

One digit away

One change could reach Singular.

Your number

8,521

Extreme · Top 0.38%

Best one-digit neighbour

1,521

Singular · Top 0.08%

Position 1: 8 → 1 · +155 points.

Gained: Perfect square, Digit sum 9, 3 distinct digits, Harshad number, Repeated digit.

Lost: Digit sum 16, Alternating parity, Prime, 4 distinct digits.

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