3 × 7 × 53 × 197

Prime Factor Structure

Factorization String 3 × 7 × 53 × 197

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 342,144

Proper Divisor Sum 122,883

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #219251 ← → #219277

1 3 7 21 53 159 197 371 591 1,113 1,379 4,137 10,441 31,323 73,087 219,261

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

219,261 657,784 328,892 164,446 82,223 246,670 123,335 370,006 185,003 555,010 277,505 832,516 416,258 208,129 624,388 312,194 156,097 468,292 234,146 117,073 351,220 175,610 87,805 263,416 131,708 65,854 32,927 98,782 49,391 148,174 74,087 222,262 111,131 333,394 166,697 500,092 250,046 125,023 375,070 187,535 562,606 281,303 843,910 421,955 1,265,866 632,933 1,898,800 949,400 474,700 237,350 118,675 356,026 178,013 534,040 267,020 133,510 66,755 200,266 100,133 300,400

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