13 × 23 × 73

Prime Factor Structure

Factorization String 13 × 23 × 73

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 24,864

Proper Divisor Sum 3,037

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #21821 ← → #21839

1 13 23 73 299 949 1,679 21,827

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

21,827 65,482 32,741 98,224 49,112 24,556 12,278 6,139 18,418 9,209 27,628 13,814 6,907 20,722 10,361 31,084 15,542 7,771 23,314 11,657 34,972 17,486 8,743 26,230 13,115 39,346 19,673 59,020 29,510 14,755 44,266 22,133 66,400 33,200 16,600 8,300 4,150 2,075 6,226 3,113 9,340 4,670 2,335 7,006 3,503 10,510 5,255 15,766 7,883 23,650 11,825 35,476 17,738 8,869 26,608 13,304 6,652 3,326 1,663 4,990

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