2,521,915

5 × 11 × 45853

Starting at 2,521,915, the Collatz iteration reaches 1 after 161 steps. The first transition is 7565746; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 5 × 11 × 45853

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 3,301,488

Proper Divisor Sum 779,573

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #2521901 ← → #2521919

Radix Representation

Decimal	2521915
Binary	1001100111101100111011 (22 bits)
Octal	0o11475473
Hexadecimal	0x267B3B

Divisor Catalog (8)

1 5 11 55 45,853 229,265 504,383 2,521,915

Collatz Trajectory (161 steps to reach 1)

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

2,521,915 7,565,746 3,782,873 11,348,620 5,674,310 2,837,155 8,511,466 4,255,733 12,767,200 6,383,600 3,191,800 1,595,900 797,950 398,975 1,196,926 598,463 1,795,390 897,695 2,693,086 1,346,543 4,039,630 2,019,815 6,059,446 3,029,723 9,089,170 4,544,585 13,633,756 6,816,878 3,408,439 10,225,318 5,112,659 15,337,978 7,668,989 23,006,968 11,503,484 5,751,742 2,875,871 8,627,614 4,313,807 12,941,422 6,470,711 19,412,134 9,706,067 29,118,202 14,559,101 43,677,304 21,838,652 10,919,326 5,459,663 16,378,990 8,189,495 24,568,486 12,284,243 36,852,730 18,426,365 55,279,096 27,639,548 13,819,774 6,909,887 20,729,662

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