λ
Sequence Observatory

6,401,649

3 × 67 × 31849
Deficient Odd Composite

Starting at 6,401,649, the Collatz iteration reaches 1 after 95 steps. The first transition is 19204948; the starting value is odd with 8 positive divisors.

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Prime Factor Structure

Factorization String 3 × 67 × 31849
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 8,663,200
Proper Divisor Sum 2,261,551
Digit Sum / Digital Root 30 (Root: 3)
Adjacent Primes #6401621 ← → #6401669

Radix Representation

Decimal 6401649
Binary 11000011010111001110001 (23 bits)
Octal 0o30327161
Hexadecimal 0x61AE71

Divisor Catalog (5 of 8)

1 3 67 201 31,849

Collatz Trajectory (95 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.

6,401,649 19,204,948 9,602,474 4,801,237 14,403,712

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