13 × 17 × 643

Prime Factor Structure

Factorization String 13 × 17 × 643

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 162,288

Proper Divisor Sum 20,185

Digit Sum / Digital Root 11 (Root: 2)

Adjacent Primes #142099 ← → #142111

1 13 17 221 643 8,359 10,931 142,103

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

142,103 426,310 213,155 639,466 319,733 959,200 479,600 239,800 119,900 59,950 29,975 89,926 44,963 134,890 67,445 202,336 101,168 50,584 25,292 12,646 6,323 18,970 9,485 28,456 14,228 7,114 3,557 10,672 5,336 2,668 1,334 667 2,002 1,001 3,004 1,502 751 2,254 1,127 3,382 1,691 5,074 2,537 7,612 3,806 1,903 5,710 2,855 8,566 4,283 12,850 6,425 19,276 9,638 4,819 14,458 7,229 21,688 10,844 5,422

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