λ
Sequence Observatory

8,511,431

673 × 12647
Deficient Odd Composite

Starting at 8,511,431, the Collatz iteration reaches 1 after 106 steps. The first transition is 25534294; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 673 × 12647
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 8,524,752
Proper Divisor Sum 13,321
Digit Sum / Digital Root 23 (Root: 5)
Adjacent Primes #8511383 ← → #8511439

Radix Representation

Decimal 8511431
Binary 100000011101111111000111 (24 bits)
Octal 0o40357707
Hexadecimal 0x81DFC7

Divisor Catalog (4)

Collatz Trajectory (106 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

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