3 × 7 × 19 × 421

Prime Factor Structure

Factorization String 3 × 7 × 19 × 421

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 270,080

Proper Divisor Sum 102,101

Digit Sum / Digital Root 39 (Root: 3)

Adjacent Primes #167971 ← → #167987

1 3 7 19 21 57 133 399 421 1,263 2,947 7,999 8,841 23,997 55,993 167,979

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

167,979 503,938 251,969 755,908 377,954 188,977 566,932 283,466 141,733 425,200 212,600 106,300 53,150 26,575 79,726 39,863 119,590 59,795 179,386 89,693 269,080 134,540 67,270 33,635 100,906 50,453 151,360 75,680 37,840 18,920 9,460 4,730 2,365 7,096 3,548 1,774 887 2,662 1,331 3,994 1,997 5,992 2,996 1,498 749 2,248 1,124 562 281 844 422 211 634 317 952 476 238 119 358 179

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