866,365

5 × 173273

Starting at 866,365, the Collatz iteration reaches 1 after 144 steps. The first transition is 2599096; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 5 × 173273

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,039,644

Proper Divisor Sum 173,279

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #866353 ← → #866389

Radix Representation

Decimal	866365
Binary	11010011100000111101 (20 bits)
Octal	0o3234075
Hexadecimal	0xD383D

Divisor Catalog (4)

1 5 173,273 866,365

Collatz Trajectory (144 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

866,365 2,599,096 1,299,548 649,774 324,887 974,662 487,331 1,461,994 730,997 2,192,992 1,096,496 548,248 274,124 137,062 68,531 205,594 102,797 308,392 154,196 77,098 38,549 115,648 57,824 28,912 14,456 7,228 3,614 1,807 5,422 2,711 8,134 4,067 12,202 6,101 18,304 9,152 4,576 2,288 1,144 572 286 143 430 215 646 323 970 485 1,456 728 364 182 91 274 137 412 206 103 310 155

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