4,199,555

5 × 839911

Starting at 4,199,555, the Collatz iteration reaches 1 after 123 steps. The first transition is 12598666; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 5 × 839911

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 5,039,472

Proper Divisor Sum 839,917

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #4199543 ← → #4199557

Radix Representation

Decimal	4199555
Binary	10000000001010010000011 (23 bits)
Octal	0o20012203
Hexadecimal	0x401483

Divisor Catalog (4)

1 5 839,911 4,199,555

Collatz Trajectory (123 steps to reach 1)

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

4,199,555 12,598,666 6,299,333 18,898,000 9,449,000 4,724,500 2,362,250 1,181,125 3,543,376 1,771,688 885,844 442,922 221,461 664,384 332,192 166,096 83,048 41,524 20,762 10,381 31,144 15,572 7,786 3,893 11,680 5,840 2,920 1,460 730 365 1,096 548 274 137 412 206 103 310 155 466 233 700 350 175 526 263 790 395 1,186 593 1,780 890 445 1,336 668 334 167 502 251 754

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