3 × 5 × 7 × 20543

Prime Factor Structure

Factorization String 3 × 5 × 7 × 20543

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,944,448

Proper Divisor Sum 1,787,433

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #2157007 ← → #2157017

1 3 5 7 15 21 35 105 20,543 61,629 102,715 143,801 308,145 431,403 719,005 2,157,015

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

2,157,015 6,471,046 3,235,523 9,706,570 4,853,285 14,559,856 7,279,928 3,639,964 1,819,982 909,991 2,729,974 1,364,987 4,094,962 2,047,481 6,142,444 3,071,222 1,535,611 4,606,834 2,303,417 6,910,252 3,455,126 1,727,563 5,182,690 2,591,345 7,774,036 3,887,018 1,943,509 5,830,528 2,915,264 1,457,632 728,816 364,408 182,204 91,102 45,551 136,654 68,327 204,982 102,491 307,474 153,737 461,212 230,606 115,303 345,910 172,955 518,866 259,433 778,300 389,150 194,575 583,726 291,863 875,590 437,795 1,313,386 656,693 1,970,080 985,040 492,520

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