7² × 19 × 139

Prime Factor Structure

Factorization String 7^2 × 19 × 139

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 159,600

Proper Divisor Sum 30,191

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #129403 ← → #129419

1 7 19 49 133 139 931 973 2,641 6,811 18,487 129,409

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

129,409 388,228 194,114 97,057 291,172 145,586 72,793 218,380 109,190 54,595 163,786 81,893 245,680 122,840 61,420 30,710 15,355 46,066 23,033 69,100 34,550 17,275 51,826 25,913 77,740 38,870 19,435 58,306 29,153 87,460 43,730 21,865 65,596 32,798 16,399 49,198 24,599 73,798 36,899 110,698 55,349 166,048 83,024 41,512 20,756 10,378 5,189 15,568 7,784 3,892 1,946 973 2,920 1,460 730 365 1,096 548 274 137

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