λ
Sequence Observatory

680,514

2 × 3 × 29 × 3911
Abundant Even Composite

Starting at 680,514, the Collatz iteration reaches 1 after 154 steps. The first transition is 340257; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 3 × 29 × 3911
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 1,408,320
Proper Divisor Sum 727,806
Digit Sum / Digital Root 24 (Root: 6)
Adjacent Primes #680509 ← → #680531

Radix Representation

Decimal 680514
Binary 10100110001001000010 (20 bits)
Octal 0o2461102
Hexadecimal 0xA6242

Divisor Catalog (16)

1 2 3 6 29 58 87 174 3,911 7,822 11,733 23,466 113,419 226,838 340,257 680,514

Collatz Trajectory (154 steps to reach 1)

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

680,514 340,257 1,020,772 510,386 255,193 765,580 382,790 191,395 574,186 287,093 861,280 430,640 215,320 107,660 53,830 26,915 80,746 40,373 121,120 60,560 30,280 15,140 7,570 3,785 11,356 5,678 2,839 8,518 4,259 12,778 6,389 19,168 9,584 4,792 2,396 1,198 599 1,798 899 2,698 1,349 4,048 2,024 1,012 506 253 760 380 190 95 286 143 430 215 646 323 970 485 1,456 728

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