3 × 7 × 139

Prime Factor Structure

Factorization String 3 × 7 × 139

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 4,480

Proper Divisor Sum 1,561

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #2917 ← → #2927

1 3 7 21 139 417 973 2,919

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

2,919 8,758 4,379 13,138 6,569 19,708 9,854 4,927 14,782 7,391 22,174 11,087 33,262 16,631 49,894 24,947 74,842 37,421 112,264 56,132 28,066 14,033 42,100 21,050 10,525 31,576 15,788 7,894 3,947 11,842 5,921 17,764 8,882 4,441 13,324 6,662 3,331 9,994 4,997 14,992 7,496 3,748 1,874 937 2,812 1,406 703 2,110 1,055 3,166 1,583 4,750 2,375 7,126 3,563 10,690 5,345 16,036 8,018 4,009

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