λ
Sequence Observatory

7,981,430

2 × 5 × 798143
Deficient Even Composite

Starting at 7,981,430, the Collatz iteration reaches 1 after 116 steps. The first transition is 3990715; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 798143
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 14,366,592
Proper Divisor Sum 6,385,162
Digit Sum / Digital Root 32 (Root: 5)
Adjacent Primes #7981417 ← → #7981433

Radix Representation

Decimal 7981430
Binary 11110011100100101110110 (23 bits)
Octal 0o36344566
Hexadecimal 0x79C976

Divisor Catalog (8)

1 2 5 10 798,143 1,596,286 3,990,715 7,981,430

Collatz Trajectory (116 steps to reach 1)

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

7,981,430 3,990,715 11,972,146 5,986,073 17,958,220 8,979,110 4,489,555 13,468,666 6,734,333 20,203,000 10,101,500 5,050,750 2,525,375 7,576,126 3,788,063 11,364,190 5,682,095 17,046,286 8,523,143 25,569,430 12,784,715 38,354,146 19,177,073 57,531,220 28,765,610 14,382,805 43,148,416 21,574,208 10,787,104 5,393,552 2,696,776 1,348,388 674,194 337,097 1,011,292 505,646 252,823 758,470 379,235 1,137,706 568,853 1,706,560 853,280 426,640 213,320 106,660 53,330 26,665 79,996 39,998 19,999 59,998 29,999 89,998 44,999 134,998 67,499 202,498 101,249 303,748

More profiles

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