21661397

Prime Factor Structure

Factorization String 21661397

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 21,661,398

Proper Divisor Sum 1

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #21661357 ← → #21661399

1 21,661,397

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

21,661,397 64,984,192 32,492,096 16,246,048 8,123,024 4,061,512 2,030,756 1,015,378 507,689 1,523,068 761,534 380,767 1,142,302 571,151 1,713,454 856,727 2,570,182 1,285,091 3,855,274 1,927,637 5,782,912 2,891,456 1,445,728 722,864 361,432 180,716 90,358 45,179 135,538 67,769 203,308 101,654 50,827 152,482 76,241 228,724 114,362 57,181 171,544 85,772 42,886 21,443 64,330 32,165 96,496 48,248 24,124 12,062 6,031 18,094 9,047 27,142 13,571 40,714 20,357 61,072 30,536 15,268 7,634 3,817

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