641,735
5 × 128347
Deficient
Odd
Composite
Starting at 641,735, the Collatz iteration reaches 1 after 71 steps. The first transition is 1925206; the starting value is odd with 4 positive divisors.
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Prime Factor Structure
Factorization String
5 × 128347
Distinct Prime Factors
2
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
4
Divisor Sum (σ)
770,088
Proper Divisor Sum
128,353
Digit Sum / Digital Root
26 (Root: 8)
Radix Representation
| Decimal | 641735 |
| Binary | 10011100101011000111 (20 bits) |
| Octal | 0o2345307 |
| Hexadecimal | 0x9CAC7 |
Divisor Catalog (4)
Collatz Trajectory (71 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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