13 × 19 × 89

Prime Factor Structure

Factorization String 13 × 19 × 89

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 25,200

Proper Divisor Sum 3,217

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #21977 ← → #21991

1 13 19 89 247 1,157 1,691 21,983

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

21,983 65,950 32,975 98,926 49,463 148,390 74,195 222,586 111,293 333,880 166,940 83,470 41,735 125,206 62,603 187,810 93,905 281,716 140,858 70,429 211,288 105,644 52,822 26,411 79,234 39,617 118,852 59,426 29,713 89,140 44,570 22,285 66,856 33,428 16,714 8,357 25,072 12,536 6,268 3,134 1,567 4,702 2,351 7,054 3,527 10,582 5,291 15,874 7,937 23,812 11,906 5,953 17,860 8,930 4,465 13,396 6,698 3,349 10,048 5,024

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