3 × 21991

Prime Factor Structure

Factorization String 3 × 21991

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 87,968

Proper Divisor Sum 21,995

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #65963 ← → #65981

1 3 21,991 65,973

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

65,973 197,920 98,960 49,480 24,740 12,370 6,185 18,556 9,278 4,639 13,918 6,959 20,878 10,439 31,318 15,659 46,978 23,489 70,468 35,234 17,617 52,852 26,426 13,213 39,640 19,820 9,910 4,955 14,866 7,433 22,300 11,150 5,575 16,726 8,363 25,090 12,545 37,636 18,818 9,409 28,228 14,114 7,057 21,172 10,586 5,293 15,880 7,940 3,970 1,985 5,956 2,978 1,489 4,468 2,234 1,117 3,352 1,676 838 419

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