211 × 991

Prime Factor Structure

Factorization String 211 × 991

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 210,304

Proper Divisor Sum 1,203

Digit Sum / Digital Root 13 (Root: 4)

Adjacent Primes #209089 ← → #209123

1 211 991 209,101

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

209,101 627,304 313,652 156,826 78,413 235,240 117,620 58,810 29,405 88,216 44,108 22,054 11,027 33,082 16,541 49,624 24,812 12,406 6,203 18,610 9,305 27,916 13,958 6,979 20,938 10,469 31,408 15,704 7,852 3,926 1,963 5,890 2,945 8,836 4,418 2,209 6,628 3,314 1,657 4,972 2,486 1,243 3,730 1,865 5,596 2,798 1,399 4,198 2,099 6,298 3,149 9,448 4,724 2,362 1,181 3,544 1,772 886 443 1,330

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