λ
Sequence Observatory

216,097

7 × 30871
Deficient Odd Composite

Starting at 216,097, the Collatz iteration reaches 1 after 142 steps. The first transition is 648292; the starting value is odd with 4 positive divisors.

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Prime Factor Structure

Factorization String 7 × 30871
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 246,976
Proper Divisor Sum 30,879
Digit Sum / Digital Root 25 (Root: 7)
Adjacent Primes #216091 ← → #216103

Radix Representation

Decimal 216097
Binary 110100110000100001 (18 bits)
Octal 0o646041
Hexadecimal 0x34C21

Divisor Catalog (4)

1 7 30,871 216,097

Collatz Trajectory (142 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.

216,097 648,292 324,146 162,073 486,220

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