2,911,158

2 × 3² × 161731

Starting at 2,911,158, the Collatz iteration reaches 1 after 120 steps. The first transition is 1455579; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2 × 3^2 × 161731

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 6,307,548

Proper Divisor Sum 3,396,390

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #2911141 ← → #2911159

Radix Representation

Decimal	2911158
Binary	1011000110101110110110 (22 bits)
Octal	0o13065666
Hexadecimal	0x2C6BB6

Divisor Catalog (12)

1 2 3 6 9 18 161,731 323,462 485,193 970,386 1,455,579 2,911,158

Collatz Trajectory (120 steps to reach 1)

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

2,911,158 1,455,579 4,366,738 2,183,369 6,550,108 3,275,054 1,637,527 4,912,582 2,456,291 7,368,874 3,684,437 11,053,312 5,526,656 2,763,328 1,381,664 690,832 345,416 172,708 86,354 43,177 129,532 64,766 32,383 97,150 48,575 145,726 72,863 218,590 109,295 327,886 163,943 491,830 245,915 737,746 368,873 1,106,620 553,310 276,655 829,966 414,983 1,244,950 622,475 1,867,426 933,713 2,801,140 1,400,570 700,285 2,100,856 1,050,428 525,214 262,607 787,822 393,911 1,181,734 590,867 1,772,602 886,301 2,658,904 1,329,452 664,726

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