λ
Sequence Observatory

1,000,521

32 × 19 × 5851
Deficient Odd Composite

Starting at 1,000,521, the Collatz iteration reaches 1 after 90 steps. The first transition is 3001564; the starting value is odd with 12 positive divisors.

Resources

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Prime Factor Structure

Factorization String 3^2 × 19 × 5851
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 1,521,520
Proper Divisor Sum 520,999
Digit Sum / Digital Root 9 (Root: 9)
Adjacent Primes #1000507 ← → #1000537

Radix Representation

Decimal 1000521
Binary 11110100010001001001 (20 bits)
Octal 0o3642111
Hexadecimal 0xF4449

Divisor Catalog (5 of 12)

1 3 9 19 57

Collatz Trajectory (90 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.

1,000,521 3,001,564 1,500,782 750,391 2,251,174

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