λ
Sequence Observatory

1,261,570

2 × 5 × 17 × 41 × 181
Deficient Even Composite

Starting at 1,261,570, the Collatz iteration reaches 1 after 204 steps. The first transition is 630785; the starting value is even with 32 positive divisors.

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Prime Factor Structure

Factorization String 2 × 5 × 17 × 41 × 181
Distinct Prime Factors 5
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 32
Divisor Sum (σ) 2,476,656
Proper Divisor Sum 1,215,086
Digit Sum / Digital Root 22 (Root: 4)
Adjacent Primes #1261567 ← → #1261571

Radix Representation

Decimal 1261570
Binary 100110100000000000010 (21 bits)
Octal 0o4640002
Hexadecimal 0x134002

Divisor Catalog (5 of 32)

1 2 5 10 17

Collatz Trajectory (204 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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