λ
Sequence Observatory

4,181,439

3 × 17 × 163 × 503
Deficient Odd Composite

Starting at 4,181,439, the Collatz iteration reaches 1 after 136 steps. The first transition is 12544318; the starting value is odd with 16 positive divisors.

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Prime Factor Structure

Factorization String 3 × 17 × 163 × 503
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 5,951,232
Proper Divisor Sum 1,769,793
Digit Sum / Digital Root 30 (Root: 3)
Adjacent Primes #4181431 ← → #4181447

Radix Representation

Decimal 4181439
Binary 1111111100110110111111 (22 bits)
Octal 0o17746677
Hexadecimal 0x3FCDBF

Divisor Catalog (5 of 16)

1 3 17 51 163

Collatz Trajectory (136 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

Showing the first 5 trajectory entries; the stopping-time total above is unchanged.

4,181,439 12,544,318 6,272,159 18,816,478 9,408,239

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