643,202
2 × 7 × 45943
Deficient
Even
Composite
Starting at 643,202, the Collatz iteration reaches 1 after 71 steps. The first transition is 321601; the starting value is even with 8 positive divisors.
Resources
Prime Factor Structure
Factorization String
2 × 7 × 45943
Distinct Prime Factors
3
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
8
Divisor Sum (σ)
1,102,656
Proper Divisor Sum
459,454
Digit Sum / Digital Root
17 (Root: 8)
Adjacent Primes
#643199 ← → #643213
Radix Representation
| Decimal | 643202 |
| Binary | 10011101000010000010 (20 bits) |
| Octal | 0o2350202 |
| Hexadecimal | 0x9D082 |
Divisor Catalog (5 of 8)
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.