13 × 43 × 389

Prime Factor Structure

Factorization String 13 × 43 × 389

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 240,240

Proper Divisor Sum 22,789

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #217439 ← → #217457

1 13 43 389 559 5,057 16,727 217,451

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

217,451 652,354 326,177 978,532 489,266 244,633 733,900 366,950 183,475 550,426 275,213 825,640 412,820 206,410 103,205 309,616 154,808 77,404 38,702 19,351 58,054 29,027 87,082 43,541 130,624 65,312 32,656 16,328 8,164 4,082 2,041 6,124 3,062 1,531 4,594 2,297 6,892 3,446 1,723 5,170 2,585 7,756 3,878 1,939 5,818 2,909 8,728 4,364 2,182 1,091 3,274 1,637 4,912 2,456 1,228 614 307 922 461 1,384

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