13 × 31 × 71 × 137

Prime Factor Structure

Factorization String 13 × 31 × 71 × 137

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 4,451,328

Proper Divisor Sum 531,347

Digit Sum / Digital Root 40 (Root: 4)

Adjacent Primes #3919973 ← → #3919999

1 13 31 71 137 403 923 1,781 2,201 4,247 9,727 28,613 55,211 126,451 301,537 3,919,981

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

3,919,981 11,759,944 5,879,972 2,939,986 1,469,993 4,409,980 2,204,990 1,102,495 3,307,486 1,653,743 4,961,230 2,480,615 7,441,846 3,720,923 11,162,770 5,581,385 16,744,156 8,372,078 4,186,039 12,558,118 6,279,059 18,837,178 9,418,589 28,255,768 14,127,884 7,063,942 3,531,971 10,595,914 5,297,957 15,893,872 7,946,936 3,973,468 1,986,734 993,367 2,980,102 1,490,051 4,470,154 2,235,077 6,705,232 3,352,616 1,676,308 838,154 419,077 1,257,232 628,616 314,308 157,154 78,577 235,732 117,866 58,933 176,800 88,400 44,200 22,100 11,050 5,525 16,576 8,288 4,144

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