λ
Sequence Observatory

7,989,319

13 × 614563
Deficient Odd Composite

Starting at 7,989,319, the Collatz iteration reaches 1 after 217 steps. The first transition is 23967958; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 13 × 614563
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 8,603,896
Proper Divisor Sum 614,577
Digit Sum / Digital Root 46 (Root: 1)
Adjacent Primes #7989251 ← → #7989323

Radix Representation

Decimal 7989319
Binary 11110011110100001000111 (23 bits)
Octal 0o36364107
Hexadecimal 0x79E847

Divisor Catalog (4)

1 13 614,563 7,989,319

Collatz Trajectory (217 steps to reach 1)

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

7,989,319 23,967,958 11,983,979 35,951,938 17,975,969 53,927,908 26,963,954 13,481,977 40,445,932 20,222,966 10,111,483 30,334,450 15,167,225 45,501,676 22,750,838 11,375,419 34,126,258 17,063,129 51,189,388 25,594,694 12,797,347 38,392,042 19,196,021 57,588,064 28,794,032 14,397,016 7,198,508 3,599,254 1,799,627 5,398,882 2,699,441 8,098,324 4,049,162 2,024,581 6,073,744 3,036,872 1,518,436 759,218 379,609 1,138,828 569,414 284,707 854,122 427,061 1,281,184 640,592 320,296 160,148 80,074 40,037 120,112 60,056 30,028 15,014 7,507 22,522 11,261 33,784 16,892 8,446

More profiles

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