3 × 5 × 7 × 20921

Prime Factor Structure

Factorization String 3 × 5 × 7 × 20921

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 4,017,024

Proper Divisor Sum 1,820,319

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #2196703 ← → #2196709

1 3 5 7 15 21 35 105 20,921 62,763 104,605 146,447 313,815 439,341 732,235 2,196,705

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

2,196,705 6,590,116 3,295,058 1,647,529 4,942,588 2,471,294 1,235,647 3,706,942 1,853,471 5,560,414 2,780,207 8,340,622 4,170,311 12,510,934 6,255,467 18,766,402 9,383,201 28,149,604 14,074,802 7,037,401 21,112,204 10,556,102 5,278,051 15,834,154 7,917,077 23,751,232 11,875,616 5,937,808 2,968,904 1,484,452 742,226 371,113 1,113,340 556,670 278,335 835,006 417,503 1,252,510 626,255 1,878,766 939,383 2,818,150 1,409,075 4,227,226 2,113,613 6,340,840 3,170,420 1,585,210 792,605 2,377,816 1,188,908 594,454 297,227 891,682 445,841 1,337,524 668,762 334,381 1,003,144 501,572

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