5 × 11 × 389

Prime Factor Structure

Factorization String 5 × 11 × 389

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 28,080

Proper Divisor Sum 6,685

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #21391 ← → #21397

1 5 11 55 389 1,945 4,279 21,395

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

21,395 64,186 32,093 96,280 48,140 24,070 12,035 36,106 18,053 54,160 27,080 13,540 6,770 3,385 10,156 5,078 2,539 7,618 3,809 11,428 5,714 2,857 8,572 4,286 2,143 6,430 3,215 9,646 4,823 14,470 7,235 21,706 10,853 32,560 16,280 8,140 4,070 2,035 6,106 3,053 9,160 4,580 2,290 1,145 3,436 1,718 859 2,578 1,289 3,868 1,934 967 2,902 1,451 4,354 2,177 6,532 3,266 1,633 4,900

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