3 × 7 × 19 × 1543

Prime Factor Structure

Factorization String 3 × 7 × 19 × 1543

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 988,160

Proper Divisor Sum 372,503

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #615623 ← → #615661

1 3 7 19 21 57 133 399 1,543 4,629 10,801 29,317 32,403 87,951 205,219 615,657

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

615,657 1,846,972 923,486 461,743 1,385,230 692,615 2,077,846 1,038,923 3,116,770 1,558,385 4,675,156 2,337,578 1,168,789 3,506,368 1,753,184 876,592 438,296 219,148 109,574 54,787 164,362 82,181 246,544 123,272 61,636 30,818 15,409 46,228 23,114 11,557 34,672 17,336 8,668 4,334 2,167 6,502 3,251 9,754 4,877 14,632 7,316 3,658 1,829 5,488 2,744 1,372 686 343 1,030 515 1,546 773 2,320 1,160 580 290 145 436 218 109

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