Numbers /378

How rare is 378?

378 scores 594 and sits in the Extreme tier — 1 in 911 of all supported numbers score this high or higher. Everything below is computed from a complete analysis of all 1,000,001 numbers in range.

Number
378
Extreme
Rarity Score
594
Global Percentile
Top 0.11%
Same-length rank
Top 23.9%
Among 900 3-digit numbers
Traits Detected
5

RNGdle.net’s own rarity score. Top 0.11% means that proportion of supported numbers scores at least this high. Every exact number has the same chance of being rolled. Same-length rank keeps the score and compares only numbers with 3 digits, including ties. How this differs from EP · Badge guide

Number DNA
378
Lab Observations · Descriptive Only
3 digitsEven numberZero-freeFirst < last3, 7, 8 appear once

These notes make the number easy to read, but they add no score unless a separately counted rarity signal appears below.

Digit Profile
Length3 digits
Unique digits3
Digit sum18
Odd / even split2 / 1
Digital root9
Mathematical Properties
Composite number
16 divisors
Not a perfect square
Not a perfect cube
Not a palindrome
Rarity Drivers
5 traits detected
Three-digit numberSingular

One of only 900 three-digit numbers in range.

Range · signal frequency

+202
1 in 1,111
Triangular numberExtreme

A sum 1 + 2 + … + k for some k.

Factorization · signal frequency

+189
1 in 707
Digit sum 18Exceptional

This number's digits add up to an uncommon total.

Arithmetic · signal frequency

+105
2.59%
3 distinct digitsRare

This number uses an uncommon count of distinct digits.

Repetition · signal frequency

+73
7.91%
Harshad numberRare

Divisible by the sum of its digits.

Arithmetic · signal frequency

+24
9.54%
Rarity Explanation

Strongest signal: Three-digit number. It appears in 900 supported numbers and contributes +202 after correlation decay.

Why is 378 unusual? Only 0.11% of the 1,000,001 supported numbers receive an equal or higher rarity score. This number falls in the Extreme tier. Scoring is grounded in the exact frequency of each detected trait — rarer traits carry more information and contribute more to the score.

Algorithm version 1.1.0

One digit away

One change could reach Singular.

Your number

378

Extreme · Top 0.11%

Best one-digit neighbour

377

Singular · Top 0.02%

Position 3: 8 → 7 · +198 points.

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

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

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Similar interesting numbers

Explore a shared pattern, a comparable score, or a mathematical relationship. Every link explains its connection to 378.

Shared patterns

210 Score 1,076Shares harshad number and triangular number.630 Score 668Shares harshad number and triangular number.666 Score 1,088Shares harshad number and triangular number.

Same length, nearby scores

528 Score 588Also 3 digits; 6 points lower.401 Score 588Also 3 digits; 6 points lower.276 Score 588Also 3 digits; 6 points lower.

Mathematical relationships

783 Score 381Same decimal digits, rotated into a different order.837 Score 381Same decimal digits, rotated into a different order.873 Score 381The decimal digits in reverse order.

Patterns in this number

Each of these has its own page explaining how common the pattern is and why.

Harshad Numbers

A Harshad — or Niven — number is divisible by the sum of its own digits. 18 works because 1 + 8 = 9 and 18 ÷ 9 = 2.

Triangular Numbers

A triangular number counts the dots in a triangle: 1, 3, 6, 10, 15, 21 — each one the running total 1 + 2 + … + k.
Open in the calculator Compare this number Browse all patterns See the rarest numbers