λ
Sequence Observatory

718,979

19 × 79 × 479
Deficient Odd Composite

Starting at 718,979, the Collatz iteration reaches 1 after 118 steps. The first transition is 2156938; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 19 × 79 × 479
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 768,000
Proper Divisor Sum 49,021
Digit Sum / Digital Root 41 (Root: 5)
Adjacent Primes #718973 ← → #718999

Radix Representation

Decimal 718979
Binary 10101111100010000011 (20 bits)
Octal 0o2574203
Hexadecimal 0xAF883

Divisor Catalog (8)

1 19 79 479 1,501 9,101 37,841 718,979

Collatz Trajectory (118 steps to reach 1)

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

718,979 2,156,938 1,078,469 3,235,408 1,617,704 808,852 404,426 202,213 606,640 303,320 151,660 75,830 37,915 113,746 56,873 170,620 85,310 42,655 127,966 63,983 191,950 95,975 287,926 143,963 431,890 215,945 647,836 323,918 161,959 485,878 242,939 728,818 364,409 1,093,228 546,614 273,307 819,922 409,961 1,229,884 614,942 307,471 922,414 461,207 1,383,622 691,811 2,075,434 1,037,717 3,113,152 1,556,576 778,288 389,144 194,572 97,286 48,643 145,930 72,965 218,896 109,448 54,724 27,362

More profiles

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