2⁴ × 31 × 1297

Prime Factor Structure

Factorization String 2^4 × 31 × 1297

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 1,287,616

Proper Divisor Sum 644,304

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #643303 ← → #643369

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

643,312 321,656 160,828 80,414 40,207 120,622 60,311 180,934 90,467 271,402 135,701 407,104 203,552 101,776 50,888 25,444 12,722 6,361 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.