3 × 7 × 13 × 1621

Prime Factor Structure

Factorization String 3 × 7 × 13 × 1621

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 726,656

Proper Divisor Sum 284,123

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #442531 ← → #442537

1 3 7 13 21 39 91 273 1,621 4,863 11,347 21,073 34,041 63,219 147,511 442,533

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

442,533 1,327,600 663,800 331,900 165,950 82,975 248,926 124,463 373,390 186,695 560,086 280,043 840,130 420,065 1,260,196 630,098 315,049 945,148 472,574 236,287 708,862 354,431 1,063,294 531,647 1,594,942 797,471 2,392,414 1,196,207 3,588,622 1,794,311 5,382,934 2,691,467 8,074,402 4,037,201 12,111,604 6,055,802 3,027,901 9,083,704 4,541,852 2,270,926 1,135,463 3,406,390 1,703,195 5,109,586 2,554,793 7,664,380 3,832,190 1,916,095 5,748,286 2,874,143 8,622,430 4,311,215 12,933,646 6,466,823 19,400,470 9,700,235 29,100,706 14,550,353 43,651,060 21,825,530

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