λ
Sequence Observatory

3,506,561

457 × 7673
Deficient Odd Composite

Starting at 3,506,561, the Collatz iteration reaches 1 after 296 steps. The first transition is 10519684; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 457 × 7673
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 3,514,692
Proper Divisor Sum 8,131
Digit Sum / Digital Root 26 (Root: 8)
Adjacent Primes #3506549 ← → #3506567

Radix Representation

Decimal 3506561
Binary 1101011000000110000001 (22 bits)
Octal 0o15300601
Hexadecimal 0x358181

Divisor Catalog (4)

Collatz Trajectory (296 steps to reach 1)

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

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