λ
Sequence Observatory

1,185,891

3 × 7 × 149 × 379
Deficient Odd Composite

Starting at 1,185,891, the Collatz iteration reaches 1 after 147 steps. The first transition is 3557674; the starting value is odd with 16 positive divisors.

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Prime Factor Structure

Factorization String 3 × 7 × 149 × 379
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 1,824,000
Proper Divisor Sum 638,109
Digit Sum / Digital Root 33 (Root: 6)
Adjacent Primes #1185889 ← → #1185893

Radix Representation

Decimal 1185891
Binary 100100001100001100011 (21 bits)
Octal 0o4414143
Hexadecimal 0x121863

Divisor Catalog (5 of 16)

1 3 7 21 149

Collatz Trajectory (147 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.

1,185,891 3,557,674 1,778,837 5,336,512 2,668,256

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