λ
Sequence Observatory

538,289

19 × 41 × 691
Deficient Odd Composite

Starting at 538,289, the Collatz iteration reaches 1 after 71 steps. The first transition is 1614868; the starting value is odd with 8 positive divisors.

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Prime Factor Structure

Factorization String 19 × 41 × 691
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 581,280
Proper Divisor Sum 42,991
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #538283 ← → #538297

Radix Representation

Decimal 538289
Binary 10000011011010110001 (20 bits)
Octal 0o2033261
Hexadecimal 0x836B1

Divisor Catalog (5 of 8)

1 19 41 691 779

Collatz Trajectory (71 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.

538,289 1,614,868 807,434 403,717 1,211,152

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