131 × 157

Prime Factor Structure

Factorization String 131 × 157

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 20,856

Proper Divisor Sum 289

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #20563 ← → #20593

1 131 157 20,567

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

20,567 61,702 30,851 92,554 46,277 138,832 69,416 34,708 17,354 8,677 26,032 13,016 6,508 3,254 1,627 4,882 2,441 7,324 3,662 1,831 5,494 2,747 8,242 4,121 12,364 6,182 3,091 9,274 4,637 13,912 6,956 3,478 1,739 5,218 2,609 7,828 3,914 1,957 5,872 2,936 1,468 734 367 1,102 551 1,654 827 2,482 1,241 3,724 1,862 931 2,794 1,397 4,192 2,096 1,048 524 262 131

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