3² × 7 × 10163

Prime Factor Structure

Factorization String 3^2 × 7 × 10163

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 1,057,056

Proper Divisor Sum 416,787

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #640267 ← → #640279

1 3 7 9 21 63 10,163 30,489 71,141 91,467 213,423 640,269

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

640,269 1,920,808 960,404 480,202 240,101 720,304 360,152 180,076 90,038 45,019 135,058 67,529 202,588 101,294 50,647 151,942 75,971 227,914 113,957 341,872 170,936 85,468 42,734 21,367 64,102 32,051 96,154 48,077 144,232 72,116 36,058 18,029 54,088 27,044 13,522 6,761 20,284 10,142 5,071 15,214 7,607 22,822 11,411 34,234 17,117 51,352 25,676 12,838 6,419 19,258 9,629 28,888 14,444 7,222 3,611 10,834 5,417 16,252 8,126 4,063

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