λ
Sequence Observatory

9,771,217

9771217
Deficient Odd Prime

Starting at 9,771,217, the Collatz iteration reaches 1 after 207 steps. The first transition is 29313652; the starting value is odd with 2 positive divisors.

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Prime Factor Structure

Factorization String 9771217
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 9,771,218
Proper Divisor Sum 1
Digit Sum / Digital Root 34 (Root: 7)
Adjacent Primes #9771211 ← → #9771227

Radix Representation

Decimal 9771217
Binary 100101010001100011010001 (24 bits)
Octal 0o45214321
Hexadecimal 0x9518D1

Divisor Catalog (2)

Collatz Trajectory (207 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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