λ
Sequence Observatory

658,330

2 × 5 × 43 × 1531
Deficient Even Composite

Starting at 658,330, the Collatz iteration reaches 1 after 185 steps. The first transition is 329165; the starting value is even with 16 positive divisors.

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Prime Factor Structure

Factorization String 2 × 5 × 43 × 1531
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 1,213,344
Proper Divisor Sum 555,014
Digit Sum / Digital Root 25 (Root: 7)
Adjacent Primes #658327 ← → #658349

Radix Representation

Decimal 658330
Binary 10100000101110011010 (20 bits)
Octal 0o2405632
Hexadecimal 0xA0B9A

Divisor Catalog (5 of 16)

1 2 5 10 43

Collatz Trajectory (185 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.

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