3 × 131 × 1637

Prime Factor Structure

Factorization String 3 × 131 × 1637

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 864,864

Proper Divisor Sum 221,523

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #643303 ← → #643369

1 3 131 393 1,637 4,911 214,447 643,341

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

643,341 1,930,024 965,012 482,506 241,253 723,760 361,880 180,940 90,470 45,235 135,706 67,853 203,560 101,780 50,890 25,445 76,336 38,168 19,084 9,542 4,771 14,314 7,157 21,472 10,736 5,368 2,684 1,342 671 2,014 1,007 3,022 1,511 4,534 2,267 6,802 3,401 10,204 5,102 2,551 7,654 3,827 11,482 5,741 17,224 8,612 4,306 2,153 6,460 3,230 1,615 4,846 2,423 7,270 3,635 10,906 5,453 16,360 8,180 4,090

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.