3 × 7 × 43 × 23689

Prime Factor Structure

Factorization String 3 × 7 × 43 × 23689

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 33,355,520

Proper Divisor Sum 11,964,353

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #21391133 ← → #21391187

1 3 7 21 43 129 301 903 23,689 71,067 165,823 497,469 1,018,627 3,055,881 7,130,389 21,391,167

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

21,391,167 64,173,502 32,086,751 96,260,254 48,130,127 144,390,382 72,195,191 216,585,574 108,292,787 324,878,362 162,439,181 487,317,544 243,658,772 121,829,386 60,914,693 182,744,080 91,372,040 45,686,020 22,843,010 11,421,505 34,264,516 17,132,258 8,566,129 25,698,388 12,849,194 6,424,597 19,273,792 9,636,896 4,818,448 2,409,224 1,204,612 602,306 301,153 903,460 451,730 225,865 677,596 338,798 169,399 508,198 254,099 762,298 381,149 1,143,448 571,724 285,862 142,931 428,794 214,397 643,192 321,596 160,798 80,399 241,198 120,599 361,798 180,899 542,698 271,349 814,048

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