3 × 17 × 131 × 181

Prime Factor Structure

Factorization String 3 × 17 × 131 × 181

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,729,728

Proper Divisor Sum 520,467

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #1209251 ← → #1209269

1 3 17 51 131 181 393 543 2,227 3,077 6,681 9,231 23,711 71,133 403,087 1,209,261

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

1,209,261 3,627,784 1,813,892 906,946 453,473 1,360,420 680,210 340,105 1,020,316 510,158 255,079 765,238 382,619 1,147,858 573,929 1,721,788 860,894 430,447 1,291,342 645,671 1,937,014 968,507 2,905,522 1,452,761 4,358,284 2,179,142 1,089,571 3,268,714 1,634,357 4,903,072 2,451,536 1,225,768 612,884 306,442 153,221 459,664 229,832 114,916 57,458 28,729 86,188 43,094 21,547 64,642 32,321 96,964 48,482 24,241 72,724 36,362 18,181 54,544 27,272 13,636 6,818 3,409 10,228 5,114 2,557 7,672

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