3 × 7 × 19 × 541

Prime Factor Structure

Factorization String 3 × 7 × 19 × 541

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 346,880

Proper Divisor Sum 131,021

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #215857 ← → #215863

1 3 7 19 21 57 133 399 541 1,623 3,787 10,279 11,361 30,837 71,953 215,859

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

215,859 647,578 323,789 971,368 485,684 242,842 121,421 364,264 182,132 91,066 45,533 136,600 68,300 34,150 17,075 51,226 25,613 76,840 38,420 19,210 9,605 28,816 14,408 7,204 3,602 1,801 5,404 2,702 1,351 4,054 2,027 6,082 3,041 9,124 4,562 2,281 6,844 3,422 1,711 5,134 2,567 7,702 3,851 11,554 5,777 17,332 8,666 4,333 13,000 6,500 3,250 1,625 4,876 2,438 1,219 3,658 1,829 5,488 2,744 1,372

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