138,891
3 × 67 × 691
Deficient
Odd
Composite
Starting at 138,891, the Collatz iteration reaches 1 after 144 steps. The first transition is 416674; the starting value is odd with 8 positive divisors.
Prime Factor Structure
Factorization String
3 × 67 × 691
Distinct Prime Factors
3
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
8
Divisor Sum (σ)
188,224
Proper Divisor Sum
49,333
Digit Sum / Digital Root
30 (Root: 3)
Radix Representation
| Decimal | 138891 |
| Binary | 100001111010001011 (18 bits) |
| Octal | 0o417213 |
| Hexadecimal | 0x21E8B |
Divisor Catalog (8)
Collatz Trajectory (144 steps to reach 1)
Iterative sequence n → n/2 (if even) or 3n+1 (if odd):
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