3 × 5 × 23 × 421

Prime Factor Structure

Factorization String 3 × 5 × 23 × 421

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 243,072

Proper Divisor Sum 97,827

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #145219 ← → #145253

1 3 5 15 23 69 115 345 421 1,263 2,105 6,315 9,683 29,049 48,415 145,245

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

145,245 435,736 217,868 108,934 54,467 163,402 81,701 245,104 122,552 61,276 30,638 15,319 45,958 22,979 68,938 34,469 103,408 51,704 25,852 12,926 6,463 19,390 9,695 29,086 14,543 43,630 21,815 65,446 32,723 98,170 49,085 147,256 73,628 36,814 18,407 55,222 27,611 82,834 41,417 124,252 62,126 31,063 93,190 46,595 139,786 69,893 209,680 104,840 52,420 26,210 13,105 39,316 19,658 9,829 29,488 14,744 7,372 3,686 1,843 5,530

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