3 × 5 × 13 × 1319

Prime Factor Structure

Factorization String 3 × 5 × 13 × 1319

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 443,520

Proper Divisor Sum 186,315

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #257189 ← → #257219

1 3 5 13 15 39 65 195 1,319 3,957 6,595 17,147 19,785 51,441 85,735 257,205

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

257,205 771,616 385,808 192,904 96,452 48,226 24,113 72,340 36,170 18,085 54,256 27,128 13,564 6,782 3,391 10,174 5,087 15,262 7,631 22,894 11,447 34,342 17,171 51,514 25,757 77,272 38,636 19,318 9,659 28,978 14,489 43,468 21,734 10,867 32,602 16,301 48,904 24,452 12,226 6,113 18,340 9,170 4,585 13,756 6,878 3,439 10,318 5,159 15,478 7,739 23,218 11,609 34,828 17,414 8,707 26,122 13,061 39,184 19,592 9,796

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