λ
Sequence Observatory

1,208,968

23 × 151121
Deficient Even Composite

Starting at 1,208,968, the Collatz iteration reaches 1 after 67 steps. The first transition is 604484; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 151121
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 2,266,830
Proper Divisor Sum 1,057,862
Digit Sum / Digital Root 34 (Root: 7)
Adjacent Primes #1208957 ← → #1209007

Radix Representation

Decimal 1208968
Binary 100100111001010001000 (21 bits)
Octal 0o4471210
Hexadecimal 0x127288

Divisor Catalog (8)

1 2 4 8 151,121 302,242 604,484 1,208,968

Collatz Trajectory (67 steps to reach 1)

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

1,208,968 604,484 302,242 151,121 453,364 226,682 113,341 340,024 170,012 85,006 42,503 127,510 63,755 191,266 95,633 286,900 143,450 71,725 215,176 107,588 53,794 26,897 80,692 40,346 20,173 60,520 30,260 15,130 7,565 22,696 11,348 5,674 2,837 8,512 4,256 2,128 1,064 532 266 133 400 200 100 50 25 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40

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