3 × 7 × 17 × 59

Prime Factor Structure

Factorization String 3 × 7 × 17 × 59

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 34,560

Proper Divisor Sum 13,497

Digit Sum / Digital Root 12 (Root: 3)

Adjacent Primes #21061 ← → #21067

1 3 7 17 21 51 59 119 177 357 413 1,003 1,239 3,009 7,021 21,063

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

21,063 63,190 31,595 94,786 47,393 142,180 71,090 35,545 106,636 53,318 26,659 79,978 39,989 119,968 59,984 29,992 14,996 7,498 3,749 11,248 5,624 2,812 1,406 703 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.