211,809

3 × 13 × 5431

Prime Factor Structure

Factorization String 3 × 13 × 5431

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Total Divisors 8

Divisor Sum (σ) 304,192

Proper Divisor Sum 92,383

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #211801 ← → #211811

1 3 13 39 5,431 16,293 70,603 211,809

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

211,809 635,428 317,714 158,857 476,572 238,286 119,143 357,430 178,715 536,146 268,073 804,220 402,110 201,055 603,166 301,583 904,750 452,375 1,357,126 678,563 2,035,690 1,017,845 3,053,536 1,526,768 763,384 381,692 190,846 95,423 286,270 143,135 429,406 214,703 644,110 322,055 966,166 483,083 1,449,250 724,625 2,173,876 1,086,938 543,469 1,630,408 815,204 407,602 203,801 611,404 305,702 152,851 458,554 229,277 687,832 343,916 171,958 85,979 257,938 128,969 386,908 193,454 96,727 290,182

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