21319

Prime Factor Structure

Factorization String 21319

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 21,320

Proper Divisor Sum 1

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #21317 ← → #21323

1 21,319

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

21,319 63,958 31,979 95,938 47,969 143,908 71,954 35,977 107,932 53,966 26,983 80,950 40,475 121,426 60,713 182,140 91,070 45,535 136,606 68,303 204,910 102,455 307,366 153,683 461,050 230,525 691,576 345,788 172,894 86,447 259,342 129,671 389,014 194,507 583,522 291,761 875,284 437,642 218,821 656,464 328,232 164,116 82,058 41,029 123,088 61,544 30,772 15,386 7,693 23,080 11,540 5,770 2,885 8,656 4,328 2,164 1,082 541 1,624 812

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