1,255,833

3² × 139537

Starting at 1,255,833, the Collatz iteration reaches 1 after 129 steps. The first transition is 3767500; the starting value is odd with 6 positive divisors.

Prime Factor Structure

Factorization String 3^2 × 139537

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 1,813,994

Proper Divisor Sum 558,161

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #1255831 ← → #1255847

Radix Representation

Decimal	1255833
Binary	100110010100110011001 (21 bits)
Octal	0o4624631
Hexadecimal	0x132999

Divisor Catalog (6)

1 3 9 139,537 418,611 1,255,833

Collatz Trajectory (129 steps to reach 1)

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

1,255,833 3,767,500 1,883,750 941,875 2,825,626 1,412,813 4,238,440 2,119,220 1,059,610 529,805 1,589,416 794,708 397,354 198,677 596,032 298,016 149,008 74,504 37,252 18,626 9,313 27,940 13,970 6,985 20,956 10,478 5,239 15,718 7,859 23,578 11,789 35,368 17,684 8,842 4,421 13,264 6,632 3,316 1,658 829 2,488 1,244 622 311 934 467 1,402 701 2,104 1,052 526 263 790 395 1,186 593 1,780 890 445 1,336

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