19 × 1109

Prime Factor Structure

Factorization String 19 × 1109

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 22,200

Proper Divisor Sum 1,129

Digit Sum / Digital Root 11 (Root: 2)

Adjacent Primes #21067 ← → #21089

1 19 1,109 21,071

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

21,071 63,214 31,607 94,822 47,411 142,234 71,117 213,352 106,676 53,338 26,669 80,008 40,004 20,002 10,001 30,004 15,002 7,501 22,504 11,252 5,626 2,813 8,440 4,220 2,110 1,055 3,166 1,583 4,750 2,375 7,126 3,563 10,690 5,345 16,036 8,018 4,009 12,028 6,014 3,007 9,022 4,511 13,534 6,767 20,302 10,151 30,454 15,227 45,682 22,841 68,524 34,262 17,131 51,394 25,697 77,092 38,546 19,273 57,820 28,910

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