3 × 5 × 7 × 821

Prime Factor Structure

Factorization String 3 × 5 × 7 × 821

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 157,824

Proper Divisor Sum 71,619

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #86201 ← → #86209

1 3 5 7 15 21 35 105 821 2,463 4,105 5,747 12,315 17,241 28,735 86,205

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

86,205 258,616 129,308 64,654 32,327 96,982 48,491 145,474 72,737 218,212 109,106 54,553 163,660 81,830 40,915 122,746 61,373 184,120 92,060 46,030 23,015 69,046 34,523 103,570 51,785 155,356 77,678 38,839 116,518 58,259 174,778 87,389 262,168 131,084 65,542 32,771 98,314 49,157 147,472 73,736 36,868 18,434 9,217 27,652 13,826 6,913 20,740 10,370 5,185 15,556 7,778 3,889 11,668 5,834 2,917 8,752 4,376 2,188 1,094 547

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